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7ef5a232 | 1 | /* Ethernet-VPN Packet and vty Processing File |
896014f4 | 2 | * Copyright (C) 2016 6WIND |
128ea8ab | 3 | * Copyright (C) 2017 Cumulus Networks, Inc. |
896014f4 | 4 | * |
128ea8ab | 5 | * This file is part of FRR. |
896014f4 DL |
6 | * |
7 | * FRRouting is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * FRRouting is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along | |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
7ef5a232 | 21 | |
7ef5a232 PG |
22 | #include <zebra.h> |
23 | ||
24 | #include "command.h" | |
25 | #include "filter.h" | |
26 | #include "prefix.h" | |
27 | #include "log.h" | |
28 | #include "memory.h" | |
29 | #include "stream.h" | |
14c1a7bf | 30 | #include "hash.h" |
31 | #include "jhash.h" | |
128ea8ab | 32 | #include "zclient.h" |
7ef5a232 | 33 | |
23d0a753 DA |
34 | #include "lib/printfrr.h" |
35 | ||
7ef5a232 PG |
36 | #include "bgpd/bgp_attr_evpn.h" |
37 | #include "bgpd/bgpd.h" | |
38 | #include "bgpd/bgp_table.h" | |
39 | #include "bgpd/bgp_route.h" | |
40 | #include "bgpd/bgp_attr.h" | |
41 | #include "bgpd/bgp_mplsvpn.h" | |
9bedbb1e | 42 | #include "bgpd/bgp_label.h" |
7ef5a232 | 43 | #include "bgpd/bgp_evpn.h" |
14c1a7bf | 44 | #include "bgpd/bgp_evpn_private.h" |
185fb14a | 45 | #include "bgpd/bgp_evpn_mh.h" |
14c1a7bf | 46 | #include "bgpd/bgp_ecommunity.h" |
128ea8ab | 47 | #include "bgpd/bgp_encap_types.h" |
48 | #include "bgpd/bgp_debug.h" | |
14454c9f | 49 | #include "bgpd/bgp_errors.h" |
128ea8ab | 50 | #include "bgpd/bgp_aspath.h" |
d7d97010 | 51 | #include "bgpd/bgp_zebra.h" |
db0e1937 | 52 | #include "bgpd/bgp_nexthop.h" |
dcc68b5e | 53 | #include "bgpd/bgp_addpath.h" |
47bf0432 | 54 | #include "bgpd/bgp_mac.h" |
5d5393b9 | 55 | #include "bgpd/bgp_vty.h" |
a2299aba | 56 | #include "bgpd/bgp_nht.h" |
23aa35ad | 57 | #include "bgpd/bgp_trace.h" |
128ea8ab | 58 | |
59 | /* | |
60 | * Definitions and external declarations. | |
61 | */ | |
96244aca DL |
62 | DEFINE_QOBJ_TYPE(bgpevpn); |
63 | DEFINE_QOBJ_TYPE(bgp_evpn_es); | |
128ea8ab | 64 | |
ca337b46 | 65 | DEFINE_MTYPE_STATIC(BGPD, VRF_ROUTE_TARGET, "L3 Route Target"); |
128ea8ab | 66 | |
67 | /* | |
68 | * Static function declarations | |
69 | */ | |
021b6596 AD |
70 | static void bgp_evpn_remote_ip_hash_init(struct bgpevpn *evpn); |
71 | static void bgp_evpn_remote_ip_hash_destroy(struct bgpevpn *evpn); | |
72 | static void bgp_evpn_remote_ip_hash_add(struct bgpevpn *vpn, | |
73 | struct bgp_path_info *pi); | |
74 | static void bgp_evpn_remote_ip_hash_del(struct bgpevpn *vpn, | |
75 | struct bgp_path_info *pi); | |
dc6cef73 AD |
76 | static void bgp_evpn_remote_ip_hash_iterate(struct bgpevpn *vpn, |
77 | void (*func)(struct hash_bucket *, | |
78 | void *), | |
79 | void *arg); | |
021b6596 AD |
80 | static void bgp_evpn_link_to_vni_svi_hash(struct bgp *bgp, struct bgpevpn *vpn); |
81 | static void bgp_evpn_unlink_from_vni_svi_hash(struct bgp *bgp, | |
82 | struct bgpevpn *vpn); | |
83 | static unsigned int vni_svi_hash_key_make(const void *p); | |
84 | static bool vni_svi_hash_cmp(const void *p1, const void *p2); | |
85 | static void bgp_evpn_remote_ip_process_nexthops(struct bgpevpn *vpn, | |
86 | struct ipaddr *addr, | |
87 | bool resolve); | |
88 | static void bgp_evpn_remote_ip_hash_link_nexthop(struct hash_bucket *bucket, | |
89 | void *args); | |
90 | static void bgp_evpn_remote_ip_hash_unlink_nexthop(struct hash_bucket *bucket, | |
91 | void *args); | |
9c7edc03 | 92 | static struct in_addr zero_vtep_ip; |
14c1a7bf | 93 | |
94 | /* | |
95 | * Private functions. | |
96 | */ | |
97 | ||
98 | /* | |
99 | * Make vni hash key. | |
100 | */ | |
d8b87afe | 101 | static unsigned int vni_hash_key_make(const void *p) |
14c1a7bf | 102 | { |
d8b87afe | 103 | const struct bgpevpn *vpn = p; |
d62a17ae | 104 | return (jhash_1word(vpn->vni, 0)); |
14c1a7bf | 105 | } |
106 | ||
107 | /* | |
108 | * Comparison function for vni hash | |
109 | */ | |
74df8d6d | 110 | static bool vni_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 111 | { |
d62a17ae | 112 | const struct bgpevpn *vpn1 = p1; |
113 | const struct bgpevpn *vpn2 = p2; | |
14c1a7bf | 114 | |
ce40c627 | 115 | return vpn1->vni == vpn2->vni; |
14c1a7bf | 116 | } |
117 | ||
c44ab6f1 | 118 | int vni_list_cmp(void *p1, void *p2) |
64465785 DS |
119 | { |
120 | const struct bgpevpn *vpn1 = p1; | |
121 | const struct bgpevpn *vpn2 = p2; | |
122 | ||
123 | return vpn1->vni - vpn2->vni; | |
124 | } | |
125 | ||
10ebe1ab MK |
126 | /* |
127 | * Make vrf import route target hash key. | |
128 | */ | |
d8b87afe | 129 | static unsigned int vrf_import_rt_hash_key_make(const void *p) |
10ebe1ab | 130 | { |
d8b87afe QY |
131 | const struct vrf_irt_node *irt = p; |
132 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
133 | |
134 | return jhash(pnt, 8, 0x5abc1234); | |
10ebe1ab MK |
135 | } |
136 | ||
137 | /* | |
138 | * Comparison function for vrf import rt hash | |
139 | */ | |
74df8d6d | 140 | static bool vrf_import_rt_hash_cmp(const void *p1, const void *p2) |
10ebe1ab MK |
141 | { |
142 | const struct vrf_irt_node *irt1 = p1; | |
143 | const struct vrf_irt_node *irt2 = p2; | |
144 | ||
10ebe1ab MK |
145 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
146 | } | |
147 | ||
148 | /* | |
f9b8094e | 149 | * Create a new vrf import_rt in evpn instance |
10ebe1ab MK |
150 | */ |
151 | static struct vrf_irt_node *vrf_import_rt_new(struct ecommunity_val *rt) | |
152 | { | |
5e53dce3 | 153 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
154 | struct vrf_irt_node *irt; |
155 | ||
5e53dce3 T |
156 | bgp_evpn = bgp_get_evpn(); |
157 | if (!bgp_evpn) { | |
e50f7cfd | 158 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 159 | "vrf import rt new - evpn instance not created yet"); |
10ebe1ab MK |
160 | return NULL; |
161 | } | |
162 | ||
163 | irt = XCALLOC(MTYPE_BGP_EVPN_VRF_IMPORT_RT, | |
164 | sizeof(struct vrf_irt_node)); | |
10ebe1ab MK |
165 | |
166 | irt->rt = *rt; | |
167 | irt->vrfs = list_new(); | |
168 | ||
169 | /* Add to hash */ | |
ac390ef8 | 170 | (void)hash_get(bgp_evpn->vrf_import_rt_hash, irt, hash_alloc_intern); |
10ebe1ab MK |
171 | |
172 | return irt; | |
173 | } | |
174 | ||
175 | /* | |
176 | * Free the vrf import rt node | |
177 | */ | |
178 | static void vrf_import_rt_free(struct vrf_irt_node *irt) | |
179 | { | |
5e53dce3 | 180 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 181 | |
5e53dce3 T |
182 | bgp_evpn = bgp_get_evpn(); |
183 | if (!bgp_evpn) { | |
e50f7cfd | 184 | flog_err(EC_BGP_NO_DFLT, |
f9b8094e | 185 | "vrf import rt free - evpn instance not created yet"); |
10ebe1ab MK |
186 | return; |
187 | } | |
188 | ||
5e53dce3 | 189 | hash_release(bgp_evpn->vrf_import_rt_hash, irt); |
6a154c88 | 190 | list_delete(&irt->vrfs); |
10ebe1ab MK |
191 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); |
192 | } | |
193 | ||
3727e359 DA |
194 | static void hash_vrf_import_rt_free(struct vrf_irt_node *irt) |
195 | { | |
196 | XFREE(MTYPE_BGP_EVPN_VRF_IMPORT_RT, irt); | |
197 | } | |
198 | ||
10ebe1ab MK |
199 | /* |
200 | * Function to lookup Import RT node - used to map a RT to set of | |
201 | * VNIs importing routes with that RT. | |
202 | */ | |
203 | static struct vrf_irt_node *lookup_vrf_import_rt(struct ecommunity_val *rt) | |
204 | { | |
5e53dce3 | 205 | struct bgp *bgp_evpn = NULL; |
10ebe1ab MK |
206 | struct vrf_irt_node *irt; |
207 | struct vrf_irt_node tmp; | |
208 | ||
5e53dce3 T |
209 | bgp_evpn = bgp_get_evpn(); |
210 | if (!bgp_evpn) { | |
f9b8094e T |
211 | flog_err( |
212 | EC_BGP_NO_DFLT, | |
213 | "vrf import rt lookup - evpn instance not created yet"); | |
10ebe1ab MK |
214 | return NULL; |
215 | } | |
216 | ||
6006b807 | 217 | memset(&tmp, 0, sizeof(tmp)); |
10ebe1ab | 218 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); |
5e53dce3 | 219 | irt = hash_lookup(bgp_evpn->vrf_import_rt_hash, &tmp); |
10ebe1ab MK |
220 | return irt; |
221 | } | |
222 | ||
223 | /* | |
224 | * Is specified VRF present on the RT's list of "importing" VRFs? | |
225 | */ | |
996c9314 | 226 | static int is_vrf_present_in_irt_vrfs(struct list *vrfs, struct bgp *bgp_vrf) |
10ebe1ab MK |
227 | { |
228 | struct listnode *node = NULL, *nnode = NULL; | |
229 | struct bgp *tmp_bgp_vrf = NULL; | |
230 | ||
231 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, tmp_bgp_vrf)) { | |
232 | if (tmp_bgp_vrf == bgp_vrf) | |
233 | return 1; | |
234 | } | |
235 | return 0; | |
236 | } | |
237 | ||
14c1a7bf | 238 | /* |
239 | * Make import route target hash key. | |
240 | */ | |
d8b87afe | 241 | static unsigned int import_rt_hash_key_make(const void *p) |
14c1a7bf | 242 | { |
d8b87afe QY |
243 | const struct irt_node *irt = p; |
244 | const char *pnt = irt->rt.val; | |
5a1b3fb5 DS |
245 | |
246 | return jhash(pnt, 8, 0xdeadbeef); | |
14c1a7bf | 247 | } |
248 | ||
249 | /* | |
250 | * Comparison function for import rt hash | |
251 | */ | |
74df8d6d | 252 | static bool import_rt_hash_cmp(const void *p1, const void *p2) |
14c1a7bf | 253 | { |
d62a17ae | 254 | const struct irt_node *irt1 = p1; |
255 | const struct irt_node *irt2 = p2; | |
14c1a7bf | 256 | |
d62a17ae | 257 | return (memcmp(irt1->rt.val, irt2->rt.val, ECOMMUNITY_SIZE) == 0); |
14c1a7bf | 258 | } |
259 | ||
7724c0a1 | 260 | /* |
128ea8ab | 261 | * Create a new import_rt |
262 | */ | |
d62a17ae | 263 | static struct irt_node *import_rt_new(struct bgp *bgp, |
264 | struct ecommunity_val *rt) | |
128ea8ab | 265 | { |
d62a17ae | 266 | struct irt_node *irt; |
128ea8ab | 267 | |
d62a17ae | 268 | irt = XCALLOC(MTYPE_BGP_EVPN_IMPORT_RT, sizeof(struct irt_node)); |
128ea8ab | 269 | |
d62a17ae | 270 | irt->rt = *rt; |
271 | irt->vnis = list_new(); | |
128ea8ab | 272 | |
d62a17ae | 273 | /* Add to hash */ |
ac390ef8 | 274 | (void)hash_get(bgp->import_rt_hash, irt, hash_alloc_intern); |
128ea8ab | 275 | |
d62a17ae | 276 | return irt; |
128ea8ab | 277 | } |
278 | ||
279 | /* | |
280 | * Free the import rt node | |
7724c0a1 | 281 | */ |
d62a17ae | 282 | static void import_rt_free(struct bgp *bgp, struct irt_node *irt) |
7724c0a1 | 283 | { |
d62a17ae | 284 | hash_release(bgp->import_rt_hash, irt); |
6a154c88 | 285 | list_delete(&irt->vnis); |
d62a17ae | 286 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); |
7724c0a1 | 287 | } |
288 | ||
3727e359 DA |
289 | static void hash_import_rt_free(struct irt_node *irt) |
290 | { | |
291 | XFREE(MTYPE_BGP_EVPN_IMPORT_RT, irt); | |
292 | } | |
293 | ||
14c1a7bf | 294 | /* |
128ea8ab | 295 | * Function to lookup Import RT node - used to map a RT to set of |
296 | * VNIs importing routes with that RT. | |
297 | */ | |
d62a17ae | 298 | static struct irt_node *lookup_import_rt(struct bgp *bgp, |
299 | struct ecommunity_val *rt) | |
128ea8ab | 300 | { |
d62a17ae | 301 | struct irt_node *irt; |
302 | struct irt_node tmp; | |
128ea8ab | 303 | |
6006b807 | 304 | memset(&tmp, 0, sizeof(tmp)); |
d62a17ae | 305 | memcpy(&tmp.rt, rt, ECOMMUNITY_SIZE); |
306 | irt = hash_lookup(bgp->import_rt_hash, &tmp); | |
307 | return irt; | |
128ea8ab | 308 | } |
309 | ||
310 | /* | |
311 | * Is specified VNI present on the RT's list of "importing" VNIs? | |
312 | */ | |
d62a17ae | 313 | static int is_vni_present_in_irt_vnis(struct list *vnis, struct bgpevpn *vpn) |
128ea8ab | 314 | { |
d62a17ae | 315 | struct listnode *node, *nnode; |
316 | struct bgpevpn *tmp_vpn; | |
128ea8ab | 317 | |
d62a17ae | 318 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, tmp_vpn)) { |
319 | if (tmp_vpn == vpn) | |
320 | return 1; | |
321 | } | |
128ea8ab | 322 | |
d62a17ae | 323 | return 0; |
128ea8ab | 324 | } |
325 | ||
326 | /* | |
327 | * Compare Route Targets. | |
328 | */ | |
f4a5218d AK |
329 | int bgp_evpn_route_target_cmp(struct ecommunity *ecom1, |
330 | struct ecommunity *ecom2) | |
128ea8ab | 331 | { |
d62a17ae | 332 | if (ecom1 && !ecom2) |
333 | return -1; | |
128ea8ab | 334 | |
d62a17ae | 335 | if (!ecom1 && ecom2) |
336 | return 1; | |
128ea8ab | 337 | |
d62a17ae | 338 | if (!ecom1 && !ecom2) |
339 | return 0; | |
128ea8ab | 340 | |
d62a17ae | 341 | if (ecom1->str && !ecom2->str) |
342 | return -1; | |
128ea8ab | 343 | |
d62a17ae | 344 | if (!ecom1->str && ecom2->str) |
345 | return 1; | |
128ea8ab | 346 | |
d62a17ae | 347 | if (!ecom1->str && !ecom2->str) |
348 | return 0; | |
128ea8ab | 349 | |
d62a17ae | 350 | return strcmp(ecom1->str, ecom2->str); |
128ea8ab | 351 | } |
352 | ||
ca337b46 SW |
353 | /* |
354 | * Compare L3 Route Targets. | |
355 | */ | |
356 | static int evpn_vrf_route_target_cmp(struct vrf_route_target *rt1, | |
357 | struct vrf_route_target *rt2) | |
358 | { | |
359 | return bgp_evpn_route_target_cmp(rt1->ecom, rt2->ecom); | |
360 | } | |
361 | ||
f4a5218d | 362 | void bgp_evpn_xxport_delete_ecomm(void *val) |
987d8198 DS |
363 | { |
364 | struct ecommunity *ecomm = val; | |
365 | ecommunity_free(&ecomm); | |
366 | } | |
367 | ||
ca337b46 SW |
368 | /* |
369 | * Delete l3 Route Target. | |
370 | */ | |
371 | static void evpn_vrf_rt_del(void *val) | |
372 | { | |
373 | struct vrf_route_target *l3rt = val; | |
374 | ||
375 | ecommunity_free(&l3rt->ecom); | |
376 | ||
377 | XFREE(MTYPE_VRF_ROUTE_TARGET, l3rt); | |
378 | } | |
379 | ||
380 | /* | |
381 | * Allocate a new l3 Route Target. | |
382 | */ | |
383 | static struct vrf_route_target *evpn_vrf_rt_new(struct ecommunity *ecom) | |
384 | { | |
385 | struct vrf_route_target *l3rt; | |
386 | ||
387 | l3rt = XCALLOC(MTYPE_VRF_ROUTE_TARGET, sizeof(struct vrf_route_target)); | |
388 | ||
389 | l3rt->ecom = ecom; | |
390 | ||
391 | return l3rt; | |
392 | } | |
393 | ||
128ea8ab | 394 | /* |
395 | * Mask off global-admin field of specified extended community (RT), | |
396 | * just retain the local-admin field. | |
397 | */ | |
d62a17ae | 398 | static inline void mask_ecom_global_admin(struct ecommunity_val *dst, |
58d8948c | 399 | const struct ecommunity_val *src) |
128ea8ab | 400 | { |
d7c0a89a | 401 | uint8_t type; |
128ea8ab | 402 | |
d62a17ae | 403 | type = src->val[0]; |
404 | dst->val[0] = 0; | |
405 | if (type == ECOMMUNITY_ENCODE_AS) { | |
406 | dst->val[2] = dst->val[3] = 0; | |
407 | } else if (type == ECOMMUNITY_ENCODE_AS4 | |
408 | || type == ECOMMUNITY_ENCODE_IP) { | |
409 | dst->val[2] = dst->val[3] = 0; | |
410 | dst->val[4] = dst->val[5] = 0; | |
411 | } | |
128ea8ab | 412 | } |
413 | ||
10ebe1ab | 414 | /* |
58d8948c SW |
415 | * Converts the RT to Ecommunity Value and adjusts masking based |
416 | * on flags set for RT. | |
10ebe1ab | 417 | */ |
58d8948c SW |
418 | static void vrf_rt2ecom_val(struct ecommunity_val *to_eval, |
419 | const struct vrf_route_target *l3rt, int iter) | |
10ebe1ab | 420 | { |
58d8948c | 421 | const struct ecommunity_val *eval; |
10ebe1ab | 422 | |
58d8948c SW |
423 | eval = (const struct ecommunity_val *)(l3rt->ecom->val + |
424 | (iter * ECOMMUNITY_SIZE)); | |
425 | /* If using "automatic" or "wildcard *" RT, | |
10ebe1ab MK |
426 | * we only care about the local-admin sub-field. |
427 | * This is to facilitate using L3VNI(VRF-VNI) | |
58d8948c SW |
428 | * as the RT for EBGP peering too and simplify |
429 | * configurations by allowing any ASN via '*'. | |
10ebe1ab | 430 | */ |
58d8948c | 431 | memcpy(to_eval, eval, ECOMMUNITY_SIZE); |
10ebe1ab | 432 | |
58d8948c SW |
433 | if (CHECK_FLAG(l3rt->flags, BGP_VRF_RT_AUTO) || |
434 | CHECK_FLAG(l3rt->flags, BGP_VRF_RT_WILD)) | |
435 | mask_ecom_global_admin(to_eval, eval); | |
436 | } | |
10ebe1ab | 437 | |
58d8948c SW |
438 | /* |
439 | * Map one RT to specified VRF. | |
440 | * bgp_vrf = BGP vrf instance | |
441 | */ | |
442 | static void map_vrf_to_rt(struct bgp *bgp_vrf, struct vrf_route_target *l3rt) | |
443 | { | |
444 | uint32_t i = 0; | |
445 | ||
446 | for (i = 0; i < l3rt->ecom->size; i++) { | |
447 | struct vrf_irt_node *irt = NULL; | |
448 | struct ecommunity_val eval_tmp; | |
449 | ||
450 | /* Adjust masking for value */ | |
451 | vrf_rt2ecom_val(&eval_tmp, l3rt, i); | |
10ebe1ab | 452 | |
58d8948c | 453 | irt = lookup_vrf_import_rt(&eval_tmp); |
10ebe1ab | 454 | |
58d8948c SW |
455 | if (irt && is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
456 | return; /* Already mapped. */ | |
457 | ||
458 | if (!irt) | |
459 | irt = vrf_import_rt_new(&eval_tmp); | |
460 | ||
461 | /* Add VRF to the list for this RT. */ | |
462 | listnode_add(irt->vrfs, bgp_vrf); | |
463 | } | |
10ebe1ab MK |
464 | } |
465 | ||
466 | /* | |
467 | * Unmap specified VRF from specified RT. If there are no other | |
468 | * VRFs for this RT, then the RT hash is deleted. | |
469 | * bgp_vrf: BGP VRF specific instance | |
470 | */ | |
58d8948c SW |
471 | static void unmap_vrf_from_rt(struct bgp *bgp_vrf, |
472 | struct vrf_route_target *l3rt) | |
10ebe1ab | 473 | { |
58d8948c SW |
474 | uint32_t i; |
475 | ||
476 | for (i = 0; i < l3rt->ecom->size; i++) { | |
477 | struct vrf_irt_node *irt; | |
478 | struct ecommunity_val eval_tmp; | |
479 | ||
480 | /* Adjust masking for value */ | |
481 | vrf_rt2ecom_val(&eval_tmp, l3rt, i); | |
482 | ||
483 | irt = lookup_vrf_import_rt(&eval_tmp); | |
484 | ||
485 | if (!irt) | |
486 | return; /* Not mapped */ | |
487 | ||
488 | /* Delete VRF from list for this RT. */ | |
489 | listnode_delete(irt->vrfs, bgp_vrf); | |
490 | ||
491 | if (!listnode_head(irt->vrfs)) | |
492 | vrf_import_rt_free(irt); | |
10ebe1ab MK |
493 | } |
494 | } | |
495 | ||
128ea8ab | 496 | /* |
497 | * Map one RT to specified VNI. | |
14c1a7bf | 498 | */ |
d62a17ae | 499 | static void map_vni_to_rt(struct bgp *bgp, struct bgpevpn *vpn, |
500 | struct ecommunity_val *eval) | |
128ea8ab | 501 | { |
d62a17ae | 502 | struct irt_node *irt; |
503 | struct ecommunity_val eval_tmp; | |
128ea8ab | 504 | |
d62a17ae | 505 | /* If using "automatic" RT, we only care about the local-admin |
506 | * sub-field. | |
507 | * This is to facilitate using VNI as the RT for EBGP peering too. | |
508 | */ | |
509 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
510 | if (!is_import_rt_configured(vpn)) | |
511 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 512 | |
d62a17ae | 513 | irt = lookup_import_rt(bgp, &eval_tmp); |
b1ab0dfe | 514 | if (irt) |
d62a17ae | 515 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
516 | /* Already mapped. */ | |
517 | return; | |
128ea8ab | 518 | |
879e43a5 | 519 | if (!irt) |
d62a17ae | 520 | irt = import_rt_new(bgp, &eval_tmp); |
128ea8ab | 521 | |
d62a17ae | 522 | /* Add VNI to the hash list for this RT. */ |
523 | listnode_add(irt->vnis, vpn); | |
128ea8ab | 524 | } |
525 | ||
526 | /* | |
527 | * Unmap specified VNI from specified RT. If there are no other | |
528 | * VNIs for this RT, then the RT hash is deleted. | |
529 | */ | |
d62a17ae | 530 | static void unmap_vni_from_rt(struct bgp *bgp, struct bgpevpn *vpn, |
531 | struct irt_node *irt) | |
14c1a7bf | 532 | { |
d62a17ae | 533 | /* Delete VNI from hash list for this RT. */ |
534 | listnode_delete(irt->vnis, vpn); | |
535 | if (!listnode_head(irt->vnis)) { | |
d62a17ae | 536 | import_rt_free(bgp, irt); |
537 | } | |
14c1a7bf | 538 | } |
539 | ||
0ca10580 | 540 | static void bgp_evpn_get_rmac_nexthop(struct bgpevpn *vpn, |
bd494ec5 | 541 | const struct prefix_evpn *p, |
0ca10580 CS |
542 | struct attr *attr, uint8_t flags) |
543 | { | |
544 | struct bgp *bgp_vrf = vpn->bgp_vrf; | |
545 | ||
546 | memset(&attr->rmac, 0, sizeof(struct ethaddr)); | |
547 | if (!bgp_vrf) | |
548 | return; | |
549 | ||
b96cafa3 CS |
550 | if (p->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
551 | return; | |
552 | ||
553 | /* Copy sys (pip) RMAC and PIP IP as nexthop | |
554 | * in case of route is self MAC-IP, | |
555 | * advertise-pip and advertise-svi-ip features | |
556 | * are enabled. | |
557 | * Otherwise, for all host MAC-IP route's | |
27727001 | 558 | * copy anycast RMAC. |
b96cafa3 CS |
559 | */ |
560 | if (CHECK_FLAG(flags, BGP_EVPN_MACIP_TYPE_SVI_IP) | |
561 | && bgp_vrf->evpn_info->advertise_pip && | |
562 | bgp_vrf->evpn_info->is_anycast_mac) { | |
563 | /* copy sys rmac */ | |
564 | memcpy(&attr->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
565 | ETH_ALEN); | |
566 | attr->nexthop = bgp_vrf->evpn_info->pip_ip; | |
567 | attr->mp_nexthop_global_in = | |
568 | bgp_vrf->evpn_info->pip_ip; | |
569 | } else | |
570 | memcpy(&attr->rmac, &bgp_vrf->rmac, ETH_ALEN); | |
0ca10580 | 571 | } |
b96cafa3 | 572 | |
128ea8ab | 573 | /* |
574 | * Create RT extended community automatically from passed information: | |
575 | * of the form AS:VNI. | |
576 | * NOTE: We use only the lower 16 bits of the AS. This is sufficient as | |
577 | * the need is to get a RT value that will be unique across different | |
578 | * VNIs but the same across routers (in the same AS) for a particular | |
579 | * VNI. | |
580 | */ | |
58d8948c SW |
581 | static void form_auto_rt(struct bgp *bgp, vni_t vni, struct list *rtl, |
582 | bool is_l3) | |
128ea8ab | 583 | { |
d62a17ae | 584 | struct ecommunity_val eval; |
ca337b46 | 585 | struct ecommunity *ecomadd; |
58d8948c | 586 | struct ecommunity *ecom; |
ca337b46 SW |
587 | struct vrf_route_target *l3rt; |
588 | struct vrf_route_target *newrt; | |
b90d4580 CS |
589 | bool ecom_found = false; |
590 | struct listnode *node; | |
128ea8ab | 591 | |
bf1061d8 VB |
592 | if (bgp->advertise_autort_rfc8365) |
593 | vni |= EVPN_AUTORT_VXLAN; | |
c581d8b0 | 594 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
128ea8ab | 595 | |
d62a17ae | 596 | ecomadd = ecommunity_new(); |
1207a5bc | 597 | ecommunity_add_val(ecomadd, &eval, false, false); |
b90d4580 | 598 | |
58d8948c SW |
599 | if (is_l3) { |
600 | for (ALL_LIST_ELEMENTS_RO(rtl, node, l3rt)) | |
601 | if (ecommunity_cmp(ecomadd, l3rt->ecom)) { | |
602 | ecom_found = true; | |
603 | break; | |
604 | } | |
605 | } else { | |
606 | for (ALL_LIST_ELEMENTS_RO(rtl, node, ecom)) | |
607 | if (ecommunity_cmp(ecomadd, ecom)) { | |
608 | ecom_found = true; | |
609 | break; | |
610 | } | |
611 | } | |
b90d4580 | 612 | |
ca337b46 | 613 | if (!ecom_found) { |
58d8948c SW |
614 | if (is_l3) { |
615 | newrt = evpn_vrf_rt_new(ecomadd); | |
616 | /* Label it as autoderived */ | |
617 | SET_FLAG(newrt->flags, BGP_VRF_RT_AUTO); | |
618 | listnode_add_sort(rtl, newrt); | |
619 | } else | |
620 | listnode_add_sort(rtl, ecomadd); | |
ca337b46 | 621 | } else |
84f22ecc | 622 | ecommunity_free(&ecomadd); |
128ea8ab | 623 | } |
14c1a7bf | 624 | |
625 | /* | |
128ea8ab | 626 | * Derive RD and RT for a VNI automatically. Invoked at the time of |
627 | * creation of a VNI. | |
628 | */ | |
d62a17ae | 629 | static void derive_rd_rt_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 630 | { |
d62a17ae | 631 | bgp_evpn_derive_auto_rd(bgp, vpn); |
632 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
633 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
128ea8ab | 634 | } |
635 | ||
1ec31309 | 636 | /* |
637 | * Convert nexthop (remote VTEP IP) into an IPv6 address. | |
638 | */ | |
639 | static void evpn_convert_nexthop_to_ipv6(struct attr *attr) | |
640 | { | |
641 | if (BGP_ATTR_NEXTHOP_AFI_IP6(attr)) | |
642 | return; | |
643 | ipv4_to_ipv4_mapped_ipv6(&attr->mp_nexthop_global, attr->nexthop); | |
644 | attr->mp_nexthop_len = IPV6_MAX_BYTELEN; | |
645 | } | |
646 | ||
34c7f35f SW |
647 | /* |
648 | * Wrapper for node get in global table. | |
649 | */ | |
650 | struct bgp_dest *bgp_evpn_global_node_get(struct bgp_table *table, afi_t afi, | |
09319b4e DS |
651 | safi_t safi, |
652 | const struct prefix_evpn *evp, | |
34c7f35f SW |
653 | struct prefix_rd *prd, |
654 | const struct bgp_path_info *local_pi) | |
c44ab6f1 AK |
655 | { |
656 | struct prefix_evpn global_p; | |
657 | ||
658 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
659 | /* prefix in the global table doesn't include the VTEP-IP so | |
660 | * we need to create a different copy of the prefix | |
661 | */ | |
662 | evpn_type1_prefix_global_copy(&global_p, evp); | |
663 | evp = &global_p; | |
34c7f35f SW |
664 | } else if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && |
665 | local_pi) { | |
666 | /* | |
852d9f97 SW |
667 | * prefix in the global table needs MAC/IP, ensure they are |
668 | * present, using one's from local table's path_info. | |
34c7f35f | 669 | */ |
852d9f97 SW |
670 | if (is_evpn_prefix_ipaddr_none(evp)) { |
671 | /* VNI MAC -> Global */ | |
672 | evpn_type2_prefix_global_copy( | |
673 | &global_p, evp, NULL /* mac */, | |
674 | evpn_type2_path_info_get_ip(local_pi)); | |
675 | } else { | |
676 | /* VNI IP -> Global */ | |
677 | evpn_type2_prefix_global_copy( | |
678 | &global_p, evp, | |
679 | evpn_type2_path_info_get_mac(local_pi), | |
680 | NULL /* ip */); | |
681 | } | |
682 | ||
c44ab6f1 AK |
683 | evp = &global_p; |
684 | } | |
685 | return bgp_afi_node_get(table, afi, safi, (struct prefix *)evp, prd); | |
686 | } | |
687 | ||
34c7f35f SW |
688 | /* |
689 | * Wrapper for node lookup in global table. | |
690 | */ | |
691 | struct bgp_dest * | |
692 | bgp_evpn_global_node_lookup(struct bgp_table *table, afi_t afi, safi_t safi, | |
693 | const struct prefix_evpn *evp, | |
694 | struct prefix_rd *prd, | |
695 | const struct bgp_path_info *local_pi) | |
c44ab6f1 AK |
696 | { |
697 | struct prefix_evpn global_p; | |
698 | ||
699 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) { | |
700 | /* prefix in the global table doesn't include the VTEP-IP so | |
701 | * we need to create a different copy of the prefix | |
702 | */ | |
703 | evpn_type1_prefix_global_copy(&global_p, evp); | |
704 | evp = &global_p; | |
34c7f35f SW |
705 | } else if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE && |
706 | local_pi) { | |
707 | /* | |
852d9f97 SW |
708 | * prefix in the global table needs MAC/IP, ensure they are |
709 | * present, using one's from local table's path_info. | |
34c7f35f | 710 | */ |
852d9f97 SW |
711 | if (is_evpn_prefix_ipaddr_none(evp)) { |
712 | /* VNI MAC -> Global */ | |
713 | evpn_type2_prefix_global_copy( | |
714 | &global_p, evp, NULL /* mac */, | |
715 | evpn_type2_path_info_get_ip(local_pi)); | |
716 | } else { | |
717 | /* VNI IP -> Global */ | |
718 | evpn_type2_prefix_global_copy( | |
719 | &global_p, evp, | |
720 | evpn_type2_path_info_get_mac(local_pi), | |
721 | NULL /* ip */); | |
722 | } | |
723 | ||
c44ab6f1 AK |
724 | evp = &global_p; |
725 | } | |
726 | return bgp_afi_node_lookup(table, afi, safi, (struct prefix *)evp, prd); | |
727 | } | |
728 | ||
34c7f35f | 729 | /* |
852d9f97 | 730 | * Wrapper for node get in VNI IP table. |
34c7f35f | 731 | */ |
852d9f97 SW |
732 | struct bgp_dest *bgp_evpn_vni_ip_node_get(struct bgp_table *const table, |
733 | const struct prefix_evpn *evp, | |
734 | const struct bgp_path_info *parent_pi) | |
34c7f35f SW |
735 | { |
736 | struct prefix_evpn vni_p; | |
737 | ||
738 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE && parent_pi) { | |
739 | /* prefix in the global table doesn't include the VTEP-IP so | |
740 | * we need to create a different copy for the VNI | |
741 | */ | |
852d9f97 SW |
742 | evpn_type1_prefix_vni_ip_copy(&vni_p, evp, |
743 | parent_pi->attr->nexthop); | |
34c7f35f | 744 | evp = &vni_p; |
852d9f97 SW |
745 | } else if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
746 | /* Only MAC-IP should go into this table, not mac-only */ | |
747 | assert(is_evpn_prefix_ipaddr_none(evp) == false); | |
748 | ||
34c7f35f | 749 | /* |
852d9f97 | 750 | * prefix in the vni IP table doesn't include MAC so |
34c7f35f | 751 | * we need to create a different copy of the prefix. |
34c7f35f | 752 | */ |
852d9f97 | 753 | evpn_type2_prefix_vni_ip_copy(&vni_p, evp); |
34c7f35f SW |
754 | evp = &vni_p; |
755 | } | |
756 | return bgp_node_get(table, (struct prefix *)evp); | |
757 | } | |
758 | ||
759 | /* | |
852d9f97 | 760 | * Wrapper for node lookup in VNI IP table. |
34c7f35f | 761 | */ |
852d9f97 SW |
762 | struct bgp_dest * |
763 | bgp_evpn_vni_ip_node_lookup(const struct bgp_table *const table, | |
764 | const struct prefix_evpn *evp, | |
765 | const struct bgp_path_info *parent_pi) | |
34c7f35f SW |
766 | { |
767 | struct prefix_evpn vni_p; | |
768 | ||
769 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE && parent_pi) { | |
770 | /* prefix in the global table doesn't include the VTEP-IP so | |
771 | * we need to create a different copy for the VNI | |
772 | */ | |
852d9f97 SW |
773 | evpn_type1_prefix_vni_ip_copy(&vni_p, evp, |
774 | parent_pi->attr->nexthop); | |
34c7f35f | 775 | evp = &vni_p; |
852d9f97 SW |
776 | } else if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
777 | /* Only MAC-IP should go into this table, not mac-only */ | |
778 | assert(is_evpn_prefix_ipaddr_none(evp) == false); | |
779 | ||
34c7f35f | 780 | /* |
852d9f97 | 781 | * prefix in the vni IP table doesn't include MAC so |
34c7f35f | 782 | * we need to create a different copy of the prefix. |
34c7f35f | 783 | */ |
852d9f97 | 784 | evpn_type2_prefix_vni_ip_copy(&vni_p, evp); |
34c7f35f SW |
785 | evp = &vni_p; |
786 | } | |
787 | return bgp_node_lookup(table, (struct prefix *)evp); | |
788 | } | |
789 | ||
852d9f97 SW |
790 | /* |
791 | * Wrapper for node get in VNI MAC table. | |
792 | */ | |
793 | struct bgp_dest * | |
794 | bgp_evpn_vni_mac_node_get(struct bgp_table *const table, | |
795 | const struct prefix_evpn *evp, | |
796 | const struct bgp_path_info *parent_pi) | |
797 | { | |
798 | struct prefix_evpn vni_p; | |
799 | ||
800 | /* Only type-2 should ever go into this table */ | |
801 | assert(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE); | |
802 | ||
803 | /* | |
804 | * prefix in the vni MAC table doesn't include IP so | |
805 | * we need to create a different copy of the prefix. | |
806 | */ | |
807 | evpn_type2_prefix_vni_mac_copy(&vni_p, evp); | |
808 | evp = &vni_p; | |
809 | return bgp_node_get(table, (struct prefix *)evp); | |
810 | } | |
811 | ||
812 | /* | |
813 | * Wrapper for node lookup in VNI MAC table. | |
814 | */ | |
815 | struct bgp_dest * | |
816 | bgp_evpn_vni_mac_node_lookup(const struct bgp_table *const table, | |
817 | const struct prefix_evpn *evp, | |
818 | const struct bgp_path_info *parent_pi) | |
819 | { | |
820 | struct prefix_evpn vni_p; | |
821 | ||
822 | /* Only type-2 should ever go into this table */ | |
823 | assert(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE); | |
824 | ||
825 | /* | |
826 | * prefix in the vni MAC table doesn't include IP so | |
827 | * we need to create a different copy of the prefix. | |
828 | */ | |
829 | evpn_type2_prefix_vni_mac_copy(&vni_p, evp); | |
830 | evp = &vni_p; | |
831 | return bgp_node_lookup(table, (struct prefix *)evp); | |
832 | } | |
833 | ||
834 | /* | |
835 | * Wrapper for node get in both VNI tables. | |
836 | */ | |
837 | struct bgp_dest *bgp_evpn_vni_node_get(struct bgpevpn *vpn, | |
838 | const struct prefix_evpn *p, | |
839 | const struct bgp_path_info *parent_pi) | |
840 | { | |
841 | if ((p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) && | |
842 | (is_evpn_prefix_ipaddr_none(p) == true)) | |
843 | return bgp_evpn_vni_mac_node_get(vpn->mac_table, p, parent_pi); | |
844 | ||
845 | return bgp_evpn_vni_ip_node_get(vpn->ip_table, p, parent_pi); | |
846 | } | |
847 | ||
848 | /* | |
849 | * Wrapper for node lookup in both VNI tables. | |
850 | */ | |
851 | struct bgp_dest *bgp_evpn_vni_node_lookup(const struct bgpevpn *vpn, | |
852 | const struct prefix_evpn *p, | |
853 | const struct bgp_path_info *parent_pi) | |
854 | { | |
855 | if ((p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) && | |
856 | (is_evpn_prefix_ipaddr_none(p) == true)) | |
857 | return bgp_evpn_vni_mac_node_lookup(vpn->mac_table, p, | |
858 | parent_pi); | |
859 | ||
860 | return bgp_evpn_vni_ip_node_lookup(vpn->ip_table, p, parent_pi); | |
861 | } | |
862 | ||
128ea8ab | 863 | /* |
864 | * Add (update) or delete MACIP from zebra. | |
14c1a7bf | 865 | */ |
d62a17ae | 866 | static int bgp_zebra_send_remote_macip(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 867 | const struct prefix_evpn *p, |
34c7f35f | 868 | const struct ethaddr *mac, |
d62a17ae | 869 | struct in_addr remote_vtep_ip, int add, |
c44ab6f1 | 870 | uint8_t flags, uint32_t seq, esi_t *esi) |
d62a17ae | 871 | { |
872 | struct stream *s; | |
0ffd0fb5 | 873 | uint16_t ipa_len; |
c44ab6f1 | 874 | static struct in_addr zero_remote_vtep_ip; |
90f30caa | 875 | bool esi_valid; |
d62a17ae | 876 | |
877 | /* Check socket. */ | |
878 | if (!zclient || zclient->sock < 0) | |
879 | return 0; | |
880 | ||
881 | /* Don't try to register if Zebra doesn't know of this instance. */ | |
bb4ef1ae DS |
882 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
883 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
884 | zlog_debug( |
885 | "%s: No zebra instance to talk to, not installing remote macip", | |
886 | __func__); | |
d62a17ae | 887 | return 0; |
bb4ef1ae | 888 | } |
c44ab6f1 AK |
889 | |
890 | if (!esi) | |
891 | esi = zero_esi; | |
d62a17ae | 892 | s = zclient->obuf; |
893 | stream_reset(s); | |
894 | ||
996c9314 LB |
895 | zclient_create_header( |
896 | s, add ? ZEBRA_REMOTE_MACIP_ADD : ZEBRA_REMOTE_MACIP_DEL, | |
897 | bgp->vrf_id); | |
d62a17ae | 898 | stream_putl(s, vpn->vni); |
34c7f35f SW |
899 | |
900 | if (mac) /* Mac Addr */ | |
901 | stream_put(s, &mac->octet, ETH_ALEN); | |
902 | else | |
903 | stream_put(s, &p->prefix.macip_addr.mac.octet, ETH_ALEN); | |
904 | ||
d62a17ae | 905 | /* IP address length and IP address, if any. */ |
3714a385 | 906 | if (is_evpn_prefix_ipaddr_none(p)) |
0ffd0fb5 | 907 | stream_putw(s, 0); |
d62a17ae | 908 | else { |
3714a385 | 909 | ipa_len = is_evpn_prefix_ipaddr_v4(p) ? IPV4_MAX_BYTELEN |
d62a17ae | 910 | : IPV6_MAX_BYTELEN; |
0ffd0fb5 | 911 | stream_putw(s, ipa_len); |
3714a385 | 912 | stream_put(s, &p->prefix.macip_addr.ip.ip.addr, ipa_len); |
d62a17ae | 913 | } |
9c7edc03 AK |
914 | /* If the ESI is valid that becomes the nexthop; tape out the |
915 | * VTEP-IP for that case | |
c44ab6f1 | 916 | */ |
90f30caa AK |
917 | if (bgp_evpn_is_esi_valid(esi)) { |
918 | esi_valid = true; | |
c44ab6f1 | 919 | stream_put_in_addr(s, &zero_remote_vtep_ip); |
90f30caa AK |
920 | } else { |
921 | esi_valid = false; | |
9c7edc03 | 922 | stream_put_in_addr(s, &remote_vtep_ip); |
90f30caa | 923 | } |
d62a17ae | 924 | |
ead40654 | 925 | /* TX flags - MAC sticky status and/or gateway mac */ |
f07e1c99 | 926 | /* Also TX the sequence number of the best route. */ |
927 | if (add) { | |
ead40654 | 928 | stream_putc(s, flags); |
f07e1c99 | 929 | stream_putl(s, seq); |
c44ab6f1 | 930 | stream_put(s, esi, sizeof(esi_t)); |
f07e1c99 | 931 | } |
d62a17ae | 932 | |
933 | stream_putw_at(s, 0, stream_get_endp(s)); | |
934 | ||
90f30caa AK |
935 | if (bgp_debug_zebra(NULL)) { |
936 | char esi_buf[ESI_STR_LEN]; | |
937 | ||
938 | if (esi_valid) | |
939 | esi_to_str(esi, esi_buf, sizeof(esi_buf)); | |
940 | else | |
941 | snprintf(esi_buf, sizeof(esi_buf), "-"); | |
996c9314 | 942 | zlog_debug( |
90f30caa | 943 | "Tx %s MACIP, VNI %u MAC %pEA IP %pIA flags 0x%x seq %u remote VTEP %pI4 esi %s", |
996c9314 | 944 | add ? "ADD" : "DEL", vpn->vni, |
852d9f97 SW |
945 | (mac ? mac : &p->prefix.macip_addr.mac), |
946 | &p->prefix.macip_addr.ip, flags, seq, &remote_vtep_ip, | |
947 | esi_buf); | |
90f30caa | 948 | } |
d62a17ae | 949 | |
23aa35ad AK |
950 | frrtrace(5, frr_bgp, evpn_mac_ip_zsend, add, vpn, p, remote_vtep_ip, |
951 | esi); | |
952 | ||
d62a17ae | 953 | return zclient_send_message(zclient); |
7ef5a232 | 954 | } |
b18825eb | 955 | |
128ea8ab | 956 | /* |
957 | * Add (update) or delete remote VTEP from zebra. | |
958 | */ | |
d62a17ae | 959 | static int bgp_zebra_send_remote_vtep(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
960 | const struct prefix_evpn *p, |
961 | int flood_control, int add) | |
128ea8ab | 962 | { |
d62a17ae | 963 | struct stream *s; |
128ea8ab | 964 | |
d62a17ae | 965 | /* Check socket. */ |
966 | if (!zclient || zclient->sock < 0) | |
967 | return 0; | |
128ea8ab | 968 | |
d62a17ae | 969 | /* Don't try to register if Zebra doesn't know of this instance. */ |
bb4ef1ae DS |
970 | if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) { |
971 | if (BGP_DEBUG(zebra, ZEBRA)) | |
15569c58 DA |
972 | zlog_debug( |
973 | "%s: No zebra instance to talk to, not installing remote vtep", | |
974 | __func__); | |
d62a17ae | 975 | return 0; |
bb4ef1ae | 976 | } |
128ea8ab | 977 | |
d62a17ae | 978 | s = zclient->obuf; |
979 | stream_reset(s); | |
128ea8ab | 980 | |
996c9314 LB |
981 | zclient_create_header( |
982 | s, add ? ZEBRA_REMOTE_VTEP_ADD : ZEBRA_REMOTE_VTEP_DEL, | |
983 | bgp->vrf_id); | |
d62a17ae | 984 | stream_putl(s, vpn->vni); |
3714a385 | 985 | if (is_evpn_prefix_ipaddr_v4(p)) |
986 | stream_put_in_addr(s, &p->prefix.imet_addr.ip.ipaddr_v4); | |
987 | else if (is_evpn_prefix_ipaddr_v6(p)) { | |
af4c2728 | 988 | flog_err( |
e50f7cfd | 989 | EC_BGP_VTEP_INVALID, |
d62a17ae | 990 | "Bad remote IP when trying to %s remote VTEP for VNI %u", |
991 | add ? "ADD" : "DEL", vpn->vni); | |
992 | return -1; | |
993 | } | |
b16dd019 | 994 | stream_putl(s, flood_control); |
128ea8ab | 995 | |
d62a17ae | 996 | stream_putw_at(s, 0, stream_get_endp(s)); |
128ea8ab | 997 | |
d62a17ae | 998 | if (bgp_debug_zebra(NULL)) |
23d0a753 | 999 | zlog_debug("Tx %s Remote VTEP, VNI %u remote VTEP %pI4", |
d62a17ae | 1000 | add ? "ADD" : "DEL", vpn->vni, |
23d0a753 | 1001 | &p->prefix.imet_addr.ip.ipaddr_v4); |
128ea8ab | 1002 | |
23aa35ad AK |
1003 | frrtrace(3, frr_bgp, evpn_bum_vtep_zsend, add, vpn, p); |
1004 | ||
d62a17ae | 1005 | return zclient_send_message(zclient); |
128ea8ab | 1006 | } |
1007 | ||
342dd0c6 | 1008 | /* |
1009 | * Build extended communities for EVPN prefix route. | |
1010 | */ | |
1011 | static void build_evpn_type5_route_extcomm(struct bgp *bgp_vrf, | |
1012 | struct attr *attr) | |
1013 | { | |
1014 | struct ecommunity ecom_encap; | |
342dd0c6 | 1015 | struct ecommunity_val eval; |
1016 | struct ecommunity_val eval_rmac; | |
1017 | bgp_encap_types tnl_type; | |
1018 | struct listnode *node, *nnode; | |
ca337b46 | 1019 | struct vrf_route_target *l3rt; |
fab92da7 | 1020 | struct ecommunity *old_ecom; |
ca337b46 | 1021 | struct ecommunity *ecom; |
342dd0c6 | 1022 | struct list *vrf_export_rtl = NULL; |
1023 | ||
1024 | /* Encap */ | |
1025 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
1026 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
1027 | encode_encap_extcomm(tnl_type, &eval); | |
1028 | ecom_encap.size = 1; | |
34540b0d | 1029 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 1030 | ecom_encap.val = (uint8_t *)eval.val; |
342dd0c6 | 1031 | |
1032 | /* Add Encap */ | |
b53e67a3 DA |
1033 | if (bgp_attr_get_ecommunity(attr)) { |
1034 | old_ecom = bgp_attr_get_ecommunity(attr); | |
fab92da7 | 1035 | ecom = ecommunity_merge(ecommunity_dup(old_ecom), &ecom_encap); |
1036 | if (!old_ecom->refcnt) | |
1037 | ecommunity_free(&old_ecom); | |
1038 | } else | |
1039 | ecom = ecommunity_dup(&ecom_encap); | |
b53e67a3 | 1040 | bgp_attr_set_ecommunity(attr, ecom); |
5bbd2cc1 | 1041 | attr->encap_tunneltype = tnl_type; |
342dd0c6 | 1042 | |
1043 | /* Add the export RTs for L3VNI/VRF */ | |
1044 | vrf_export_rtl = bgp_vrf->vrf_export_rtl; | |
ca337b46 | 1045 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, l3rt)) |
b53e67a3 | 1046 | bgp_attr_set_ecommunity( |
ca337b46 SW |
1047 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), |
1048 | l3rt->ecom)); | |
342dd0c6 | 1049 | |
1050 | /* add the router mac extended community */ | |
1051 | if (!is_zero_mac(&attr->rmac)) { | |
342dd0c6 | 1052 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
b53e67a3 DA |
1053 | ecommunity_add_val(bgp_attr_get_ecommunity(attr), &eval_rmac, |
1054 | true, true); | |
342dd0c6 | 1055 | } |
342dd0c6 | 1056 | } |
1057 | ||
128ea8ab | 1058 | /* |
1ec31309 | 1059 | * Build extended communities for EVPN route. |
1060 | * This function is applicable for type-2 and type-3 routes. The layer-2 RT | |
1061 | * and ENCAP extended communities are applicable for all routes. | |
1062 | * The default gateway extended community and MAC mobility (sticky) extended | |
1063 | * community are added as needed based on passed settings - only for type-2 | |
1064 | * routes. Likewise, the layer-3 RT and Router MAC extended communities are | |
1065 | * added, if present, based on passed settings - only for non-link-local | |
1066 | * type-2 routes. | |
128ea8ab | 1067 | */ |
7ec156a9 | 1068 | static void build_evpn_route_extcomm(struct bgpevpn *vpn, struct attr *attr, |
1ec31309 | 1069 | int add_l3_ecomm) |
128ea8ab | 1070 | { |
d62a17ae | 1071 | struct ecommunity ecom_encap; |
1072 | struct ecommunity ecom_sticky; | |
ead40654 | 1073 | struct ecommunity ecom_default_gw; |
68e33151 | 1074 | struct ecommunity ecom_na; |
d62a17ae | 1075 | struct ecommunity_val eval; |
1076 | struct ecommunity_val eval_sticky; | |
ead40654 | 1077 | struct ecommunity_val eval_default_gw; |
bc59a672 | 1078 | struct ecommunity_val eval_rmac; |
68e33151 | 1079 | struct ecommunity_val eval_na; |
9c7edc03 | 1080 | bool proxy; |
68e33151 | 1081 | |
d62a17ae | 1082 | bgp_encap_types tnl_type; |
1083 | struct listnode *node, *nnode; | |
1084 | struct ecommunity *ecom; | |
ca337b46 | 1085 | struct vrf_route_target *l3rt; |
d7c0a89a | 1086 | uint32_t seqnum; |
7a3e76f1 | 1087 | struct list *vrf_export_rtl = NULL; |
128ea8ab | 1088 | |
d62a17ae | 1089 | /* Encap */ |
1090 | tnl_type = BGP_ENCAP_TYPE_VXLAN; | |
1091 | memset(&ecom_encap, 0, sizeof(ecom_encap)); | |
1092 | encode_encap_extcomm(tnl_type, &eval); | |
1093 | ecom_encap.size = 1; | |
34540b0d | 1094 | ecom_encap.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 1095 | ecom_encap.val = (uint8_t *)eval.val; |
128ea8ab | 1096 | |
d62a17ae | 1097 | /* Add Encap */ |
b53e67a3 | 1098 | bgp_attr_set_ecommunity(attr, ecommunity_dup(&ecom_encap)); |
5bbd2cc1 | 1099 | attr->encap_tunneltype = tnl_type; |
128ea8ab | 1100 | |
7a3e76f1 | 1101 | /* Add the export RTs for L2VNI */ |
d62a17ae | 1102 | for (ALL_LIST_ELEMENTS(vpn->export_rtl, node, nnode, ecom)) |
b53e67a3 DA |
1103 | bgp_attr_set_ecommunity( |
1104 | attr, | |
1105 | ecommunity_merge(bgp_attr_get_ecommunity(attr), ecom)); | |
128ea8ab | 1106 | |
1ec31309 | 1107 | /* Add the export RTs for L3VNI if told to - caller determines |
1108 | * when this should be done. | |
523cafc4 | 1109 | */ |
1ec31309 | 1110 | if (add_l3_ecomm) { |
7ec156a9 MK |
1111 | vrf_export_rtl = bgpevpn_get_vrf_export_rtl(vpn); |
1112 | if (vrf_export_rtl && !list_isempty(vrf_export_rtl)) { | |
1113 | for (ALL_LIST_ELEMENTS(vrf_export_rtl, node, nnode, | |
ca337b46 | 1114 | l3rt)) |
b53e67a3 DA |
1115 | bgp_attr_set_ecommunity( |
1116 | attr, | |
1117 | ecommunity_merge( | |
1118 | bgp_attr_get_ecommunity(attr), | |
ca337b46 | 1119 | l3rt->ecom)); |
7ec156a9 | 1120 | } |
f1f8b53c | 1121 | } |
7a3e76f1 | 1122 | |
1ec31309 | 1123 | /* Add MAC mobility (sticky) if needed. */ |
d62a17ae | 1124 | if (attr->sticky) { |
1125 | seqnum = 0; | |
1126 | memset(&ecom_sticky, 0, sizeof(ecom_sticky)); | |
1127 | encode_mac_mobility_extcomm(1, seqnum, &eval_sticky); | |
1128 | ecom_sticky.size = 1; | |
34540b0d | 1129 | ecom_sticky.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 1130 | ecom_sticky.val = (uint8_t *)eval_sticky.val; |
b53e67a3 DA |
1131 | bgp_attr_set_ecommunity( |
1132 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), | |
1133 | &ecom_sticky)); | |
d62a17ae | 1134 | } |
c85c03c7 | 1135 | |
1ec31309 | 1136 | /* Add RMAC, if told to. */ |
1137 | if (add_l3_ecomm) { | |
bc59a672 | 1138 | encode_rmac_extcomm(&eval_rmac, &attr->rmac); |
b53e67a3 DA |
1139 | ecommunity_add_val(bgp_attr_get_ecommunity(attr), &eval_rmac, |
1140 | true, true); | |
bc59a672 MK |
1141 | } |
1142 | ||
1ec31309 | 1143 | /* Add default gateway, if needed. */ |
ead40654 MK |
1144 | if (attr->default_gw) { |
1145 | memset(&ecom_default_gw, 0, sizeof(ecom_default_gw)); | |
1146 | encode_default_gw_extcomm(&eval_default_gw); | |
1147 | ecom_default_gw.size = 1; | |
34540b0d | 1148 | ecom_default_gw.unit_size = ECOMMUNITY_SIZE; |
ead40654 | 1149 | ecom_default_gw.val = (uint8_t *)eval_default_gw.val; |
b53e67a3 DA |
1150 | bgp_attr_set_ecommunity( |
1151 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), | |
1152 | &ecom_default_gw)); | |
ead40654 MK |
1153 | } |
1154 | ||
9c7edc03 AK |
1155 | proxy = !!(attr->es_flags & ATTR_ES_PROXY_ADVERT); |
1156 | if (attr->router_flag || proxy) { | |
68e33151 | 1157 | memset(&ecom_na, 0, sizeof(ecom_na)); |
9c7edc03 | 1158 | encode_na_flag_extcomm(&eval_na, attr->router_flag, proxy); |
68e33151 | 1159 | ecom_na.size = 1; |
34540b0d | 1160 | ecom_na.unit_size = ECOMMUNITY_SIZE; |
68e33151 | 1161 | ecom_na.val = (uint8_t *)eval_na.val; |
b53e67a3 DA |
1162 | bgp_attr_set_ecommunity( |
1163 | attr, ecommunity_merge(bgp_attr_get_ecommunity(attr), | |
1164 | &ecom_na)); | |
68e33151 | 1165 | } |
128ea8ab | 1166 | } |
1167 | ||
1168 | /* | |
1169 | * Add MAC mobility extended community to attribute. | |
1170 | */ | |
d7c0a89a | 1171 | static void add_mac_mobility_to_attr(uint32_t seq_num, struct attr *attr) |
d62a17ae | 1172 | { |
1173 | struct ecommunity ecom_tmp; | |
1174 | struct ecommunity_val eval; | |
d7c0a89a | 1175 | uint8_t *ecom_val_ptr; |
f6e07e1b | 1176 | uint32_t i; |
d7c0a89a | 1177 | uint8_t *pnt; |
d62a17ae | 1178 | int type = 0; |
1179 | int sub_type = 0; | |
b53e67a3 | 1180 | struct ecommunity *ecomm = bgp_attr_get_ecommunity(attr); |
d62a17ae | 1181 | |
1182 | /* Build MM */ | |
1183 | encode_mac_mobility_extcomm(0, seq_num, &eval); | |
1184 | ||
1185 | /* Find current MM ecommunity */ | |
421bb26a | 1186 | ecom_val_ptr = NULL; |
d62a17ae | 1187 | |
b53e67a3 DA |
1188 | if (ecomm) { |
1189 | for (i = 0; i < ecomm->size; i++) { | |
1190 | pnt = ecomm->val + (i * ecomm->unit_size); | |
d62a17ae | 1191 | type = *pnt++; |
1192 | sub_type = *pnt++; | |
1193 | ||
1194 | if (type == ECOMMUNITY_ENCODE_EVPN | |
1195 | && sub_type | |
1196 | == ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY) { | |
c4efd0f4 | 1197 | ecom_val_ptr = |
b53e67a3 | 1198 | (ecomm->val + (i * ecomm->unit_size)); |
d62a17ae | 1199 | break; |
1200 | } | |
1201 | } | |
1202 | } | |
1203 | ||
1204 | /* Update the existing MM ecommunity */ | |
421bb26a | 1205 | if (ecom_val_ptr) { |
b53e67a3 | 1206 | memcpy(ecom_val_ptr, eval.val, sizeof(char) * ecomm->unit_size); |
d62a17ae | 1207 | } |
1208 | /* Add MM to existing */ | |
1209 | else { | |
1210 | memset(&ecom_tmp, 0, sizeof(ecom_tmp)); | |
1211 | ecom_tmp.size = 1; | |
34540b0d | 1212 | ecom_tmp.unit_size = ECOMMUNITY_SIZE; |
d7c0a89a | 1213 | ecom_tmp.val = (uint8_t *)eval.val; |
d62a17ae | 1214 | |
b53e67a3 DA |
1215 | if (ecomm) |
1216 | bgp_attr_set_ecommunity( | |
1217 | attr, ecommunity_merge(ecomm, &ecom_tmp)); | |
f9a78910 | 1218 | else |
b53e67a3 DA |
1219 | bgp_attr_set_ecommunity(attr, |
1220 | ecommunity_dup(&ecom_tmp)); | |
d62a17ae | 1221 | } |
128ea8ab | 1222 | } |
1223 | ||
1224 | /* Install EVPN route into zebra. */ | |
d62a17ae | 1225 | static int evpn_zebra_install(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 DS |
1226 | const struct prefix_evpn *p, |
1227 | struct bgp_path_info *pi) | |
128ea8ab | 1228 | { |
d62a17ae | 1229 | int ret; |
d594a14c | 1230 | uint8_t flags; |
b16dd019 | 1231 | int flood_control; |
9c7edc03 | 1232 | uint32_t seq; |
128ea8ab | 1233 | |
d594a14c AK |
1234 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1235 | flags = 0; | |
9c7edc03 AK |
1236 | |
1237 | if (pi->sub_type == BGP_ROUTE_IMPORTED) { | |
1238 | if (pi->attr->sticky) | |
1239 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY); | |
1240 | if (pi->attr->default_gw) | |
1241 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_GW); | |
1242 | if (is_evpn_prefix_ipaddr_v6(p) && | |
1243 | pi->attr->router_flag) | |
1244 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
1245 | ||
1246 | seq = mac_mobility_seqnum(pi->attr); | |
1247 | /* if local ES notify zebra that this is a sync path */ | |
1248 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
1249 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
1250 | if (bgp_evpn_attr_is_proxy(pi->attr)) | |
1251 | SET_FLAG(flags, | |
1252 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
1253 | } | |
1254 | } else { | |
1255 | if (!bgp_evpn_attr_is_sync(pi->attr)) | |
1256 | return 0; | |
1257 | ||
1258 | /* if a local path is being turned around and sent | |
1259 | * to zebra it is because it is a sync path on | |
1260 | * a local ES | |
1261 | */ | |
1262 | SET_FLAG(flags, ZEBRA_MACIP_TYPE_SYNC_PATH); | |
1263 | /* supply the highest peer seq number to zebra | |
1264 | * for MM seq syncing | |
1265 | */ | |
1266 | seq = bgp_evpn_attr_get_sync_seq(pi->attr); | |
1267 | /* if any of the paths from the peer have the ROUTER | |
1268 | * flag set install the local entry as a router entry | |
1269 | */ | |
1270 | if (is_evpn_prefix_ipaddr_v6(p) && | |
1271 | (pi->attr->es_flags & | |
1272 | ATTR_ES_PEER_ROUTER)) | |
1273 | SET_FLAG(flags, | |
1274 | ZEBRA_MACIP_TYPE_ROUTER_FLAG); | |
1275 | ||
1276 | if (!(pi->attr->es_flags & ATTR_ES_PEER_ACTIVE)) | |
1277 | SET_FLAG(flags, | |
1278 | ZEBRA_MACIP_TYPE_PROXY_ADVERT); | |
1279 | } | |
1280 | ||
d594a14c | 1281 | ret = bgp_zebra_send_remote_macip( |
852d9f97 SW |
1282 | bgp, vpn, p, |
1283 | (is_evpn_prefix_ipaddr_none(p) | |
1284 | ? NULL /* MAC update */ | |
1285 | : evpn_type2_path_info_get_mac( | |
1286 | pi) /* MAC-IP update */), | |
34c7f35f SW |
1287 | pi->attr->nexthop, 1, flags, seq, |
1288 | bgp_evpn_attr_get_esi(pi->attr)); | |
c44ab6f1 AK |
1289 | } else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) { |
1290 | ret = bgp_evpn_remote_es_evi_add(bgp, vpn, p); | |
d594a14c | 1291 | } else { |
2a3f51cf | 1292 | switch (bgp_attr_get_pmsi_tnl_type(pi->attr)) { |
b16dd019 AK |
1293 | case PMSI_TNLTYPE_INGR_REPL: |
1294 | flood_control = VXLAN_FLOOD_HEAD_END_REPL; | |
1295 | break; | |
1296 | ||
1297 | case PMSI_TNLTYPE_PIM_SM: | |
1298 | flood_control = VXLAN_FLOOD_PIM_SM; | |
1299 | break; | |
1300 | ||
1301 | default: | |
1302 | flood_control = VXLAN_FLOOD_DISABLED; | |
1303 | break; | |
1304 | } | |
1305 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, flood_control, 1); | |
d594a14c | 1306 | } |
128ea8ab | 1307 | |
d62a17ae | 1308 | return ret; |
128ea8ab | 1309 | } |
1310 | ||
1311 | /* Uninstall EVPN route from zebra. */ | |
d62a17ae | 1312 | static int evpn_zebra_uninstall(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 1313 | const struct prefix_evpn *p, |
34c7f35f | 1314 | struct bgp_path_info *pi, bool is_sync) |
128ea8ab | 1315 | { |
d62a17ae | 1316 | int ret; |
128ea8ab | 1317 | |
d62a17ae | 1318 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
34c7f35f | 1319 | ret = bgp_zebra_send_remote_macip( |
852d9f97 SW |
1320 | bgp, vpn, p, |
1321 | (is_evpn_prefix_ipaddr_none(p) | |
1322 | ? NULL /* MAC update */ | |
1323 | : evpn_type2_path_info_get_mac( | |
1324 | pi) /* MAC-IP update */), | |
34c7f35f SW |
1325 | (is_sync ? zero_vtep_ip : pi->attr->nexthop), 0, 0, 0, |
1326 | NULL); | |
c44ab6f1 AK |
1327 | else if (p->prefix.route_type == BGP_EVPN_AD_ROUTE) |
1328 | ret = bgp_evpn_remote_es_evi_del(bgp, vpn, p); | |
d62a17ae | 1329 | else |
b16dd019 AK |
1330 | ret = bgp_zebra_send_remote_vtep(bgp, vpn, p, |
1331 | VXLAN_FLOOD_DISABLED, 0); | |
128ea8ab | 1332 | |
d62a17ae | 1333 | return ret; |
128ea8ab | 1334 | } |
1335 | ||
1336 | /* | |
1337 | * Due to MAC mobility, the prior "local" best route has been supplanted | |
1338 | * by a "remote" best route. The prior route has to be deleted and withdrawn | |
1339 | * from peers. | |
1340 | */ | |
d62a17ae | 1341 | static void evpn_delete_old_local_route(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1342 | struct bgp_dest *dest, |
9c7edc03 AK |
1343 | struct bgp_path_info *old_local, |
1344 | struct bgp_path_info *new_select) | |
128ea8ab | 1345 | { |
9bcb3eef | 1346 | struct bgp_dest *global_dest; |
40381db7 | 1347 | struct bgp_path_info *pi; |
d62a17ae | 1348 | afi_t afi = AFI_L2VPN; |
1349 | safi_t safi = SAFI_EVPN; | |
128ea8ab | 1350 | |
9c7edc03 | 1351 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { |
9c7edc03 AK |
1352 | char esi_buf[ESI_STR_LEN]; |
1353 | char esi_buf2[ESI_STR_LEN]; | |
752eed47 DS |
1354 | struct prefix_evpn *evp = |
1355 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 | 1356 | |
2dbe669b DA |
1357 | zlog_debug("local path deleted %pFX es %s; new-path-es %s", evp, |
1358 | esi_to_str(&old_local->attr->esi, esi_buf, | |
1359 | sizeof(esi_buf)), | |
1360 | new_select ? esi_to_str(&new_select->attr->esi, | |
1361 | esi_buf2, sizeof(esi_buf2)) | |
1362 | : ""); | |
9c7edc03 AK |
1363 | } |
1364 | ||
d62a17ae | 1365 | /* Locate route node in the global EVPN routing table. Note that |
1366 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
1367 | * L3VPN routes. | |
1368 | */ | |
34c7f35f SW |
1369 | global_dest = bgp_evpn_global_node_lookup( |
1370 | bgp->rib[afi][safi], afi, safi, | |
1371 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
1372 | &vpn->prd, old_local); | |
9bcb3eef | 1373 | if (global_dest) { |
d62a17ae | 1374 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 1375 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
128ea8ab | 1376 | |
d62a17ae | 1377 | /* Schedule for processing - withdraws to peers happen from |
1378 | * this table. | |
1379 | */ | |
40381db7 | 1380 | if (pi) |
9bcb3eef DS |
1381 | bgp_process(bgp, global_dest, afi, safi); |
1382 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 1383 | } |
128ea8ab | 1384 | |
d62a17ae | 1385 | /* Delete route entry in the VNI route table, caller to remove. */ |
9bcb3eef | 1386 | bgp_path_info_delete(dest, old_local); |
128ea8ab | 1387 | } |
1388 | ||
1389 | /* | |
1390 | * Calculate the best path for an EVPN route. Install/update best path in zebra, | |
1391 | * if appropriate. | |
c44ab6f1 | 1392 | * Note: vpn is NULL for local EAD-ES routes. |
128ea8ab | 1393 | */ |
c44ab6f1 | 1394 | int evpn_route_select_install(struct bgp *bgp, struct bgpevpn *vpn, |
9bcb3eef | 1395 | struct bgp_dest *dest) |
d62a17ae | 1396 | { |
4b7e6066 DS |
1397 | struct bgp_path_info *old_select, *new_select; |
1398 | struct bgp_path_info_pair old_and_new; | |
d62a17ae | 1399 | afi_t afi = AFI_L2VPN; |
1400 | safi_t safi = SAFI_EVPN; | |
1401 | int ret = 0; | |
1402 | ||
1403 | /* Compute the best path. */ | |
9bcb3eef | 1404 | bgp_best_selection(bgp, dest, &bgp->maxpaths[afi][safi], &old_and_new, |
d62a17ae | 1405 | afi, safi); |
1406 | old_select = old_and_new.old; | |
1407 | new_select = old_and_new.new; | |
1408 | ||
1409 | /* If the best path hasn't changed - see if there is still something to | |
9c7edc03 AK |
1410 | * update to zebra RIB. |
1411 | * Remote routes and SYNC route (i.e. local routes with | |
1412 | * SYNCED_FROM_PEER flag) need to updated to zebra on any attr | |
1413 | * change. | |
d62a17ae | 1414 | */ |
1415 | if (old_select && old_select == new_select | |
1416 | && old_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
1417 | && (old_select->sub_type == BGP_ROUTE_IMPORTED || |
1418 | bgp_evpn_attr_is_sync(old_select->attr)) | |
9bcb3eef | 1419 | && !CHECK_FLAG(dest->flags, BGP_NODE_USER_CLEAR) |
1defdda8 | 1420 | && !CHECK_FLAG(old_select->flags, BGP_PATH_ATTR_CHANGED) |
dcc68b5e | 1421 | && !bgp_addpath_is_addpath_used(&bgp->tx_addpath, afi, safi)) { |
9bcb3eef | 1422 | if (bgp_zebra_has_route_changed(old_select)) |
996c9314 | 1423 | ret = evpn_zebra_install( |
9bcb3eef DS |
1424 | bgp, vpn, |
1425 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
1426 | dest), | |
d594a14c | 1427 | old_select); |
1defdda8 | 1428 | UNSET_FLAG(old_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1429 | UNSET_FLAG(old_select->flags, BGP_PATH_LINK_BW_CHG); |
9bcb3eef | 1430 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1431 | return ret; |
1432 | } | |
1433 | ||
1434 | /* If the user did a "clear" this flag will be set */ | |
9bcb3eef | 1435 | UNSET_FLAG(dest->flags, BGP_NODE_USER_CLEAR); |
d62a17ae | 1436 | |
1437 | /* bestpath has changed; update relevant fields and install or uninstall | |
1438 | * into the zebra RIB. | |
1439 | */ | |
1440 | if (old_select || new_select) | |
9bcb3eef | 1441 | bgp_bump_version(dest); |
d62a17ae | 1442 | |
1443 | if (old_select) | |
9bcb3eef | 1444 | bgp_path_info_unset_flag(dest, old_select, BGP_PATH_SELECTED); |
d62a17ae | 1445 | if (new_select) { |
9bcb3eef DS |
1446 | bgp_path_info_set_flag(dest, new_select, BGP_PATH_SELECTED); |
1447 | bgp_path_info_unset_flag(dest, new_select, | |
1448 | BGP_PATH_ATTR_CHANGED); | |
1defdda8 | 1449 | UNSET_FLAG(new_select->flags, BGP_PATH_MULTIPATH_CHG); |
b1875e65 | 1450 | UNSET_FLAG(new_select->flags, BGP_PATH_LINK_BW_CHG); |
d62a17ae | 1451 | } |
1452 | ||
9c7edc03 AK |
1453 | /* a local entry with the SYNC flag also results in a MAC-IP update |
1454 | * to zebra | |
1455 | */ | |
d62a17ae | 1456 | if (new_select && new_select->type == ZEBRA_ROUTE_BGP |
9c7edc03 AK |
1457 | && (new_select->sub_type == BGP_ROUTE_IMPORTED || |
1458 | bgp_evpn_attr_is_sync(new_select->attr))) { | |
b54892e0 | 1459 | ret = evpn_zebra_install( |
9bcb3eef DS |
1460 | bgp, vpn, |
1461 | (struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
b54892e0 | 1462 | new_select); |
d594a14c | 1463 | |
d62a17ae | 1464 | /* If an old best existed and it was a "local" route, the only |
1465 | * reason | |
1466 | * it would be supplanted is due to MAC mobility procedures. So, | |
1467 | * we | |
1468 | * need to do an implicit delete and withdraw that route from | |
1469 | * peers. | |
1470 | */ | |
9c7edc03 AK |
1471 | if (new_select->sub_type == BGP_ROUTE_IMPORTED && |
1472 | old_select && old_select->peer == bgp->peer_self | |
1473 | && old_select->type == ZEBRA_ROUTE_BGP | |
1474 | && old_select->sub_type == BGP_ROUTE_STATIC | |
1475 | && vpn) | |
1476 | evpn_delete_old_local_route(bgp, vpn, dest, | |
1477 | old_select, new_select); | |
d62a17ae | 1478 | } else { |
1479 | if (old_select && old_select->type == ZEBRA_ROUTE_BGP | |
90f4f482 | 1480 | && old_select->sub_type == BGP_ROUTE_IMPORTED) |
b54892e0 DS |
1481 | ret = evpn_zebra_uninstall( |
1482 | bgp, vpn, | |
9bcb3eef DS |
1483 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
1484 | dest), | |
34c7f35f | 1485 | old_select, false); |
d62a17ae | 1486 | } |
1487 | ||
1488 | /* Clear any route change flags. */ | |
9bcb3eef | 1489 | bgp_zebra_clear_route_change_flags(dest); |
d62a17ae | 1490 | |
18ee8310 | 1491 | /* Reap old select bgp_path_info, if it has been removed */ |
1defdda8 | 1492 | if (old_select && CHECK_FLAG(old_select->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1493 | bgp_path_info_reap(dest, old_select); |
d62a17ae | 1494 | |
1495 | return ret; | |
128ea8ab | 1496 | } |
1497 | ||
9c7edc03 AK |
1498 | static struct bgp_path_info *bgp_evpn_route_get_local_path( |
1499 | struct bgp *bgp, struct bgp_dest *dest) | |
c85c03c7 | 1500 | { |
40381db7 | 1501 | struct bgp_path_info *tmp_pi; |
9c7edc03 | 1502 | struct bgp_path_info *local_pi = NULL; |
c85c03c7 | 1503 | |
9bcb3eef | 1504 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
9c7edc03 AK |
1505 | tmp_pi = tmp_pi->next) { |
1506 | if (bgp_evpn_is_path_local(bgp, tmp_pi)) { | |
40381db7 | 1507 | local_pi = tmp_pi; |
9c7edc03 AK |
1508 | break; |
1509 | } | |
d62a17ae | 1510 | } |
c85c03c7 | 1511 | |
9c7edc03 | 1512 | return local_pi; |
c85c03c7 | 1513 | } |
1514 | ||
5e53dce3 | 1515 | static int update_evpn_type5_route_entry(struct bgp *bgp_evpn, |
342dd0c6 | 1516 | struct bgp *bgp_vrf, afi_t afi, |
9bcb3eef | 1517 | safi_t safi, struct bgp_dest *dest, |
5424b7ba | 1518 | struct attr *attr, int *route_changed) |
342dd0c6 | 1519 | { |
1520 | struct attr *attr_new = NULL; | |
40381db7 | 1521 | struct bgp_path_info *pi = NULL; |
342dd0c6 | 1522 | mpls_label_t label = MPLS_INVALID_LABEL; |
40381db7 DS |
1523 | struct bgp_path_info *local_pi = NULL; |
1524 | struct bgp_path_info *tmp_pi = NULL; | |
342dd0c6 | 1525 | |
5424b7ba | 1526 | *route_changed = 0; |
342dd0c6 | 1527 | /* locate the local route entry if any */ |
9bcb3eef | 1528 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 1529 | tmp_pi = tmp_pi->next) { |
5e53dce3 | 1530 | if (tmp_pi->peer == bgp_evpn->peer_self |
40381db7 DS |
1531 | && tmp_pi->type == ZEBRA_ROUTE_BGP |
1532 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
1533 | local_pi = tmp_pi; | |
342dd0c6 | 1534 | } |
1535 | ||
2bb9eff4 | 1536 | /* |
0437e105 | 1537 | * create a new route entry if one doesn't exist. |
2bb9eff4 | 1538 | * Otherwise see if route attr has changed |
523cafc4 | 1539 | */ |
40381db7 | 1540 | if (!local_pi) { |
342dd0c6 | 1541 | |
5424b7ba MK |
1542 | /* route has changed as this is the first entry */ |
1543 | *route_changed = 1; | |
1544 | ||
342dd0c6 | 1545 | /* Add (or update) attribute to hash. */ |
1546 | attr_new = bgp_attr_intern(attr); | |
1547 | ||
1548 | /* create the route info from attribute */ | |
40381db7 | 1549 | pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1550 | bgp_evpn->peer_self, attr_new, dest); |
40381db7 | 1551 | SET_FLAG(pi->flags, BGP_PATH_VALID); |
342dd0c6 | 1552 | |
b57ba6d2 | 1553 | /* Type-5 routes advertise the L3-VNI */ |
40381db7 | 1554 | bgp_path_info_extra_get(pi); |
342dd0c6 | 1555 | vni2label(bgp_vrf->l3vni, &label); |
40381db7 DS |
1556 | memcpy(&pi->extra->label, &label, sizeof(label)); |
1557 | pi->extra->num_labels = 1; | |
342dd0c6 | 1558 | |
1559 | /* add the route entry to route node*/ | |
9bcb3eef | 1560 | bgp_path_info_add(dest, pi); |
342dd0c6 | 1561 | } else { |
1562 | ||
40381db7 DS |
1563 | tmp_pi = local_pi; |
1564 | if (!attrhash_cmp(tmp_pi->attr, attr)) { | |
5424b7ba MK |
1565 | |
1566 | /* attribute changed */ | |
1567 | *route_changed = 1; | |
1568 | ||
342dd0c6 | 1569 | /* The attribute has changed. */ |
1570 | /* Add (or update) attribute to hash. */ | |
1571 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1572 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1573 | BGP_PATH_ATTR_CHANGED); |
342dd0c6 | 1574 | |
1575 | /* Restore route, if needed. */ | |
40381db7 | 1576 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1577 | bgp_path_info_restore(dest, tmp_pi); |
342dd0c6 | 1578 | |
1579 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1580 | bgp_attr_unintern(&tmp_pi->attr); |
1581 | tmp_pi->attr = attr_new; | |
083ec940 | 1582 | tmp_pi->uptime = monotime(NULL); |
342dd0c6 | 1583 | } |
1584 | } | |
1585 | return 0; | |
1586 | } | |
1587 | ||
1588 | /* update evpn type-5 route entry */ | |
996c9314 | 1589 | static int update_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp, |
6c995628 AD |
1590 | struct attr *src_attr, afi_t src_afi, |
1591 | safi_t src_safi) | |
342dd0c6 | 1592 | { |
1593 | afi_t afi = AFI_L2VPN; | |
1594 | safi_t safi = SAFI_EVPN; | |
1595 | struct attr attr; | |
9bcb3eef | 1596 | struct bgp_dest *dest = NULL; |
5e53dce3 | 1597 | struct bgp *bgp_evpn = NULL; |
5424b7ba | 1598 | int route_changed = 0; |
342dd0c6 | 1599 | |
5e53dce3 T |
1600 | bgp_evpn = bgp_get_evpn(); |
1601 | if (!bgp_evpn) | |
faafdfa8 | 1602 | return 0; |
342dd0c6 | 1603 | |
2f69f6d3 | 1604 | /* Build path attribute for this route - use the source attr, if |
1605 | * present, else treat as locally originated. | |
1606 | */ | |
1607 | if (src_attr) | |
6f4f49b2 | 1608 | attr = *src_attr; |
2f69f6d3 | 1609 | else { |
6006b807 | 1610 | memset(&attr, 0, sizeof(attr)); |
0f05ea43 | 1611 | bgp_attr_default_set(&attr, bgp_vrf, BGP_ORIGIN_IGP); |
2f69f6d3 | 1612 | } |
5394a276 | 1613 | |
5394a276 CS |
1614 | /* Advertise Primary IP (PIP) is enabled, send individual |
1615 | * IP (default instance router-id) as nexthop. | |
1616 | * PIP is disabled or vrr interface is not present | |
27727001 | 1617 | * use anycast-IP as nexthop and anycast RMAC. |
5394a276 CS |
1618 | */ |
1619 | if (!bgp_vrf->evpn_info->advertise_pip || | |
1620 | (!bgp_vrf->evpn_info->is_anycast_mac)) { | |
1621 | attr.nexthop = bgp_vrf->originator_ip; | |
1622 | attr.mp_nexthop_global_in = bgp_vrf->originator_ip; | |
27727001 | 1623 | memcpy(&attr.rmac, &bgp_vrf->rmac, ETH_ALEN); |
5394a276 | 1624 | } else { |
27727001 CS |
1625 | /* copy sys rmac */ |
1626 | memcpy(&attr.rmac, &bgp_vrf->evpn_info->pip_rmac, ETH_ALEN); | |
5394a276 CS |
1627 | if (bgp_vrf->evpn_info->pip_ip.s_addr != INADDR_ANY) { |
1628 | attr.nexthop = bgp_vrf->evpn_info->pip_ip; | |
1629 | attr.mp_nexthop_global_in = bgp_vrf->evpn_info->pip_ip; | |
1630 | } else if (bgp_vrf->evpn_info->pip_ip.s_addr == INADDR_ANY) | |
2dbe669b DA |
1631 | if (bgp_debug_zebra(NULL)) |
1632 | zlog_debug( | |
1633 | "VRF %s evp %pFX advertise-pip primary ip is not configured", | |
1634 | vrf_id_to_name(bgp_vrf->vrf_id), evp); | |
5394a276 CS |
1635 | } |
1636 | ||
c0d72166 DS |
1637 | if (bgp_debug_zebra(NULL)) |
1638 | zlog_debug( | |
1639 | "VRF %s type-5 route evp %pFX RMAC %pEA nexthop %pI4", | |
1640 | vrf_id_to_name(bgp_vrf->vrf_id), evp, &attr.rmac, | |
1641 | &attr.nexthop); | |
5394a276 | 1642 | |
342dd0c6 | 1643 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; |
342dd0c6 | 1644 | |
6c995628 AD |
1645 | if (src_afi == AFI_IP6 && |
1646 | CHECK_FLAG(bgp_vrf->af_flags[AFI_L2VPN][SAFI_EVPN], | |
1647 | BGP_L2VPN_EVPN_ADV_IPV6_UNICAST_GW_IP)) { | |
1648 | if (src_attr && | |
1649 | !IN6_IS_ADDR_UNSPECIFIED(&src_attr->mp_nexthop_global)) { | |
1650 | attr.evpn_overlay.type = OVERLAY_INDEX_GATEWAY_IP; | |
860e740b IR |
1651 | SET_IPADDR_V6(&attr.evpn_overlay.gw_ip); |
1652 | memcpy(&attr.evpn_overlay.gw_ip.ipaddr_v6, | |
6c995628 AD |
1653 | &src_attr->mp_nexthop_global, |
1654 | sizeof(struct in6_addr)); | |
1655 | } | |
1656 | } else if (src_afi == AFI_IP && | |
1657 | CHECK_FLAG(bgp_vrf->af_flags[AFI_L2VPN][SAFI_EVPN], | |
1658 | BGP_L2VPN_EVPN_ADV_IPV4_UNICAST_GW_IP)) { | |
1659 | if (src_attr && src_attr->nexthop.s_addr != 0) { | |
1660 | attr.evpn_overlay.type = OVERLAY_INDEX_GATEWAY_IP; | |
860e740b IR |
1661 | SET_IPADDR_V4(&attr.evpn_overlay.gw_ip); |
1662 | memcpy(&attr.evpn_overlay.gw_ip.ipaddr_v4, | |
6c995628 AD |
1663 | &src_attr->nexthop, sizeof(struct in_addr)); |
1664 | } | |
1665 | } | |
1666 | ||
342dd0c6 | 1667 | /* Setup RT and encap extended community */ |
1668 | build_evpn_type5_route_extcomm(bgp_vrf, &attr); | |
1669 | ||
1670 | /* get the route node in global table */ | |
34c7f35f SW |
1671 | dest = bgp_evpn_global_node_get(bgp_evpn->rib[afi][safi], afi, safi, |
1672 | evp, &bgp_vrf->vrf_prd, NULL); | |
9bcb3eef | 1673 | assert(dest); |
342dd0c6 | 1674 | |
1675 | /* create or update the route entry within the route node */ | |
9bcb3eef | 1676 | update_evpn_type5_route_entry(bgp_evpn, bgp_vrf, afi, safi, dest, &attr, |
996c9314 | 1677 | &route_changed); |
342dd0c6 | 1678 | |
1679 | /* schedule for processing and unlock node */ | |
5424b7ba | 1680 | if (route_changed) { |
9bcb3eef DS |
1681 | bgp_process(bgp_evpn, dest, afi, safi); |
1682 | bgp_dest_unlock_node(dest); | |
5424b7ba | 1683 | } |
342dd0c6 | 1684 | |
1685 | /* uninten temporary */ | |
5ee65f6f | 1686 | if (!src_attr) |
1687 | aspath_unintern(&attr.aspath); | |
342dd0c6 | 1688 | return 0; |
1689 | } | |
1690 | ||
9c7edc03 | 1691 | static void bgp_evpn_get_sync_info(struct bgp *bgp, esi_t *esi, |
09319b4e DS |
1692 | struct bgp_dest *dest, uint32_t loc_seq, |
1693 | uint32_t *max_sync_seq, bool *active_on_peer, | |
36bac85c AK |
1694 | bool *peer_router, bool *proxy_from_peer, |
1695 | const struct ethaddr *mac) | |
9c7edc03 AK |
1696 | { |
1697 | struct bgp_path_info *tmp_pi; | |
1698 | struct bgp_path_info *second_best_path = NULL; | |
1699 | uint32_t tmp_mm_seq = 0; | |
1700 | esi_t *tmp_esi; | |
1701 | int paths_eq; | |
36bac85c AK |
1702 | struct ethaddr *tmp_mac; |
1703 | bool mac_cmp = false; | |
1704 | struct prefix_evpn *evp = (struct prefix_evpn *)&dest->p; | |
1705 | ||
1706 | ||
1707 | /* mac comparison is not needed for MAC-only routes */ | |
1708 | if (mac && !is_evpn_prefix_ipaddr_none(evp)) | |
1709 | mac_cmp = true; | |
9c7edc03 AK |
1710 | |
1711 | /* find the best non-local path. a local path can only be present | |
1712 | * as best path | |
1713 | */ | |
09319b4e DS |
1714 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
1715 | tmp_pi = tmp_pi->next) { | |
9c7edc03 AK |
1716 | if (tmp_pi->sub_type != BGP_ROUTE_IMPORTED || |
1717 | !CHECK_FLAG(tmp_pi->flags, BGP_PATH_VALID)) | |
1718 | continue; | |
1719 | ||
36bac85c AK |
1720 | /* ignore paths that have a different mac */ |
1721 | if (mac_cmp) { | |
1722 | tmp_mac = evpn_type2_path_info_get_mac(tmp_pi); | |
1723 | if (memcmp(mac, tmp_mac, sizeof(*mac))) | |
1724 | continue; | |
1725 | } | |
1726 | ||
9c7edc03 AK |
1727 | if (bgp_evpn_path_info_cmp(bgp, tmp_pi, |
1728 | second_best_path, &paths_eq)) | |
1729 | second_best_path = tmp_pi; | |
1730 | } | |
1731 | ||
1732 | if (!second_best_path) | |
1733 | return; | |
1734 | ||
1735 | tmp_esi = bgp_evpn_attr_get_esi(second_best_path->attr); | |
1736 | /* if this has the same ES desination as the local path | |
1737 | * it is a sync path | |
1738 | */ | |
1739 | if (!memcmp(esi, tmp_esi, sizeof(esi_t))) { | |
1740 | tmp_mm_seq = mac_mobility_seqnum(second_best_path->attr); | |
1741 | if (tmp_mm_seq < loc_seq) | |
1742 | return; | |
1743 | ||
1744 | /* we have a non-proxy path from the ES peer. */ | |
1745 | if (second_best_path->attr->es_flags & | |
1746 | ATTR_ES_PROXY_ADVERT) { | |
1747 | *proxy_from_peer = true; | |
1748 | } else { | |
1749 | *active_on_peer = true; | |
1750 | } | |
1751 | ||
1752 | if (second_best_path->attr->router_flag) | |
1753 | *peer_router = true; | |
1754 | ||
1755 | /* we use both proxy and non-proxy imports to | |
1756 | * determine the max sync sequence | |
1757 | */ | |
1758 | if (tmp_mm_seq > *max_sync_seq) | |
1759 | *max_sync_seq = tmp_mm_seq; | |
1760 | } | |
1761 | } | |
1762 | ||
1763 | /* Bubble up sync-info from all paths (non-best) to the local-path. | |
1764 | * This is need for MM sequence number syncing and proxy advertisement. | |
1765 | * Note: The local path can only exist as a best path in the | |
1766 | * VPN route table. It will take precedence over all sync paths. | |
1767 | */ | |
1768 | static void update_evpn_route_entry_sync_info(struct bgp *bgp, | |
09319b4e DS |
1769 | struct bgp_dest *dest, |
1770 | struct attr *attr, | |
36bac85c AK |
1771 | uint32_t loc_seq, bool setup_sync, |
1772 | const struct ethaddr *mac) | |
9c7edc03 AK |
1773 | { |
1774 | esi_t *esi; | |
752eed47 DS |
1775 | struct prefix_evpn *evp = |
1776 | (struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
9c7edc03 AK |
1777 | |
1778 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
1779 | return; | |
1780 | ||
1781 | esi = bgp_evpn_attr_get_esi(attr); | |
1782 | if (bgp_evpn_is_esi_valid(esi)) { | |
1783 | if (setup_sync) { | |
1784 | uint32_t max_sync_seq = 0; | |
1785 | bool active_on_peer = false; | |
1786 | bool peer_router = false; | |
1787 | bool proxy_from_peer = false; | |
1788 | ||
09319b4e DS |
1789 | bgp_evpn_get_sync_info(bgp, esi, dest, loc_seq, |
1790 | &max_sync_seq, &active_on_peer, | |
36bac85c AK |
1791 | &peer_router, &proxy_from_peer, |
1792 | mac); | |
9c7edc03 AK |
1793 | attr->mm_sync_seqnum = max_sync_seq; |
1794 | if (active_on_peer) | |
1795 | attr->es_flags |= ATTR_ES_PEER_ACTIVE; | |
1796 | else | |
1797 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1798 | if (proxy_from_peer) | |
1799 | attr->es_flags |= ATTR_ES_PEER_PROXY; | |
1800 | else | |
1801 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1802 | if (peer_router) | |
1803 | attr->es_flags |= ATTR_ES_PEER_ROUTER; | |
1804 | else | |
1805 | attr->es_flags &= ~ATTR_ES_PEER_ROUTER; | |
1806 | ||
1807 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
9c7edc03 AK |
1808 | char esi_buf[ESI_STR_LEN]; |
1809 | ||
2dbe669b DA |
1810 | zlog_debug( |
1811 | "setup sync info for %pFX es %s max_seq %d %s%s%s", | |
1812 | evp, | |
9c7edc03 | 1813 | esi_to_str(esi, esi_buf, |
2dbe669b | 1814 | sizeof(esi_buf)), |
9c7edc03 | 1815 | max_sync_seq, |
2dbe669b DA |
1816 | (attr->es_flags & ATTR_ES_PEER_ACTIVE) |
1817 | ? "peer-active " | |
1818 | : "", | |
1819 | (attr->es_flags & ATTR_ES_PEER_PROXY) | |
1820 | ? "peer-proxy " | |
1821 | : "", | |
1822 | (attr->es_flags & ATTR_ES_PEER_ROUTER) | |
1823 | ? "peer-router " | |
1824 | : ""); | |
9c7edc03 AK |
1825 | } |
1826 | } | |
1827 | } else { | |
1828 | attr->mm_sync_seqnum = 0; | |
1829 | attr->es_flags &= ~ATTR_ES_PEER_ACTIVE; | |
1830 | attr->es_flags &= ~ATTR_ES_PEER_PROXY; | |
1831 | } | |
1832 | } | |
1833 | ||
128ea8ab | 1834 | /* |
852d9f97 | 1835 | * Create or update EVPN route entry. This could be in the VNI route tables |
128ea8ab | 1836 | * or the global route table. |
1837 | */ | |
d62a17ae | 1838 | static int update_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
26c03e43 AK |
1839 | afi_t afi, safi_t safi, |
1840 | struct bgp_dest *dest, struct attr *attr, | |
852d9f97 SW |
1841 | const struct ethaddr *mac, |
1842 | const struct ipaddr *ip, int add, | |
34c7f35f SW |
1843 | struct bgp_path_info **pi, uint8_t flags, |
1844 | uint32_t seq, bool vpn_rt, bool *old_is_sync) | |
d62a17ae | 1845 | { |
40381db7 DS |
1846 | struct bgp_path_info *tmp_pi; |
1847 | struct bgp_path_info *local_pi; | |
d62a17ae | 1848 | struct attr *attr_new; |
b57ba6d2 | 1849 | mpls_label_t label[BGP_MAX_LABELS]; |
d7c0a89a | 1850 | uint32_t num_labels = 1; |
d62a17ae | 1851 | int route_change = 1; |
d7c0a89a | 1852 | uint8_t sticky = 0; |
b54892e0 | 1853 | const struct prefix_evpn *evp; |
d62a17ae | 1854 | |
40381db7 | 1855 | *pi = NULL; |
9bcb3eef | 1856 | evp = (const struct prefix_evpn *)bgp_dest_get_prefix(dest); |
b57ba6d2 | 1857 | memset(&label, 0, sizeof(label)); |
d62a17ae | 1858 | |
f07e1c99 | 1859 | /* See if this is an update of an existing route, or a new add. */ |
9c7edc03 | 1860 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); |
d62a17ae | 1861 | |
1862 | /* If route doesn't exist already, create a new one, if told to. | |
1863 | * Otherwise act based on whether the attributes of the route have | |
1864 | * changed or not. | |
1865 | */ | |
40381db7 | 1866 | if (!local_pi && !add) |
d62a17ae | 1867 | return 0; |
1868 | ||
9c7edc03 AK |
1869 | if (old_is_sync && local_pi) |
1870 | *old_is_sync = bgp_evpn_attr_is_sync(local_pi->attr); | |
1871 | ||
1872 | /* if a local path is being added with a non-zero esi look | |
1873 | * for SYNC paths from ES peers and bubble up the sync-info | |
1874 | */ | |
36bac85c | 1875 | update_evpn_route_entry_sync_info(bgp, dest, attr, seq, vpn_rt, mac); |
9c7edc03 | 1876 | |
f07e1c99 | 1877 | /* For non-GW MACs, update MAC mobility seq number, if needed. */ |
1878 | if (seq && !CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW)) | |
1879 | add_mac_mobility_to_attr(seq, attr); | |
d62a17ae | 1880 | |
40381db7 | 1881 | if (!local_pi) { |
d62a17ae | 1882 | /* Add (or update) attribute to hash. */ |
1883 | attr_new = bgp_attr_intern(attr); | |
1884 | ||
1885 | /* Extract MAC mobility sequence number, if any. */ | |
1886 | attr_new->mm_seqnum = | |
1887 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1888 | attr_new->sticky = sticky; | |
1889 | ||
1890 | /* Create new route with its attribute. */ | |
40381db7 | 1891 | tmp_pi = info_make(ZEBRA_ROUTE_BGP, BGP_ROUTE_STATIC, 0, |
9bcb3eef | 1892 | bgp->peer_self, attr_new, dest); |
40381db7 DS |
1893 | SET_FLAG(tmp_pi->flags, BGP_PATH_VALID); |
1894 | bgp_path_info_extra_get(tmp_pi); | |
d62a17ae | 1895 | |
1896 | /* The VNI goes into the 'label' field of the route */ | |
b57ba6d2 | 1897 | vni2label(vpn->vni, &label[0]); |
c48d9f5f MK |
1898 | |
1899 | /* Type-2 routes may carry a second VNI - the L3-VNI. | |
1900 | * Only attach second label if we are advertising two labels for | |
1901 | * type-2 routes. | |
1902 | */ | |
996c9314 LB |
1903 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1904 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
b57ba6d2 MK |
1905 | vni_t l3vni; |
1906 | ||
1907 | l3vni = bgpevpn_get_l3vni(vpn); | |
1908 | if (l3vni) { | |
1909 | vni2label(l3vni, &label[1]); | |
1910 | num_labels++; | |
1911 | } | |
1912 | } | |
d62a17ae | 1913 | |
40381db7 DS |
1914 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1915 | tmp_pi->extra->num_labels = num_labels; | |
34c7f35f | 1916 | |
852d9f97 SW |
1917 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1918 | if (mac) | |
1919 | evpn_type2_path_info_set_mac(tmp_pi, *mac); | |
1920 | else if (ip) | |
1921 | evpn_type2_path_info_set_ip(tmp_pi, *ip); | |
1922 | } | |
34c7f35f | 1923 | |
0ca10580 CS |
1924 | /* Mark route as self type-2 route */ |
1925 | if (flags && CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
1926 | tmp_pi->extra->af_flags = BGP_EVPN_MACIP_TYPE_SVI_IP; | |
9bcb3eef | 1927 | bgp_path_info_add(dest, tmp_pi); |
d62a17ae | 1928 | } else { |
40381db7 DS |
1929 | tmp_pi = local_pi; |
1930 | if (attrhash_cmp(tmp_pi->attr, attr) | |
1931 | && !CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 1932 | route_change = 0; |
1933 | else { | |
c48d9f5f MK |
1934 | /* |
1935 | * The attributes have changed, type-2 routes needs to | |
1936 | * be advertised with right labels. | |
1937 | */ | |
1938 | vni2label(vpn->vni, &label[0]); | |
996c9314 LB |
1939 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
1940 | && CHECK_FLAG(vpn->flags, | |
1941 | VNI_FLAG_USE_TWO_LABELS)) { | |
c48d9f5f MK |
1942 | vni_t l3vni; |
1943 | ||
1944 | l3vni = bgpevpn_get_l3vni(vpn); | |
1945 | if (l3vni) { | |
1946 | vni2label(l3vni, &label[1]); | |
1947 | num_labels++; | |
1948 | } | |
1949 | } | |
40381db7 DS |
1950 | memcpy(&tmp_pi->extra->label, label, sizeof(label)); |
1951 | tmp_pi->extra->num_labels = num_labels; | |
c48d9f5f | 1952 | |
852d9f97 SW |
1953 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
1954 | if (mac) | |
1955 | evpn_type2_path_info_set_mac(tmp_pi, | |
1956 | *mac); | |
1957 | else if (ip) | |
1958 | evpn_type2_path_info_set_ip(tmp_pi, | |
1959 | *ip); | |
1960 | } | |
34c7f35f | 1961 | |
d62a17ae | 1962 | /* The attribute has changed. */ |
1963 | /* Add (or update) attribute to hash. */ | |
1964 | attr_new = bgp_attr_intern(attr); | |
9bcb3eef | 1965 | bgp_path_info_set_flag(dest, tmp_pi, |
18ee8310 | 1966 | BGP_PATH_ATTR_CHANGED); |
d62a17ae | 1967 | |
f07e1c99 | 1968 | /* Extract MAC mobility sequence number, if any. */ |
1969 | attr_new->mm_seqnum = | |
1970 | bgp_attr_mac_mobility_seqnum(attr_new, &sticky); | |
1971 | attr_new->sticky = sticky; | |
1972 | ||
d62a17ae | 1973 | /* Restore route, if needed. */ |
40381db7 | 1974 | if (CHECK_FLAG(tmp_pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 1975 | bgp_path_info_restore(dest, tmp_pi); |
d62a17ae | 1976 | |
1977 | /* Unintern existing, set to new. */ | |
40381db7 DS |
1978 | bgp_attr_unintern(&tmp_pi->attr); |
1979 | tmp_pi->attr = attr_new; | |
083ec940 | 1980 | tmp_pi->uptime = monotime(NULL); |
d62a17ae | 1981 | } |
1982 | } | |
1983 | ||
58bff4d1 AK |
1984 | /* local MAC-IP routes in the VNI table are linked to |
1985 | * the destination ES | |
26c03e43 AK |
1986 | */ |
1987 | if (route_change && vpn_rt | |
1988 | && (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE)) | |
1989 | bgp_evpn_path_es_link(tmp_pi, vpn->vni, | |
1990 | bgp_evpn_attr_get_esi(tmp_pi->attr)); | |
1991 | ||
d62a17ae | 1992 | /* Return back the route entry. */ |
40381db7 | 1993 | *pi = tmp_pi; |
d62a17ae | 1994 | return route_change; |
128ea8ab | 1995 | } |
1996 | ||
ec0ab544 | 1997 | static void evpn_zebra_reinstall_best_route(struct bgp *bgp, |
9bcb3eef DS |
1998 | struct bgpevpn *vpn, |
1999 | struct bgp_dest *dest) | |
ec0ab544 AK |
2000 | { |
2001 | struct bgp_path_info *tmp_ri; | |
2002 | struct bgp_path_info *curr_select = NULL; | |
2003 | ||
9bcb3eef DS |
2004 | for (tmp_ri = bgp_dest_get_bgp_path_info(dest); tmp_ri; |
2005 | tmp_ri = tmp_ri->next) { | |
ec0ab544 AK |
2006 | if (CHECK_FLAG(tmp_ri->flags, BGP_PATH_SELECTED)) { |
2007 | curr_select = tmp_ri; | |
2008 | break; | |
2009 | } | |
2010 | } | |
2011 | ||
2012 | if (curr_select && curr_select->type == ZEBRA_ROUTE_BGP | |
9c7edc03 AK |
2013 | && (curr_select->sub_type == BGP_ROUTE_IMPORTED || |
2014 | bgp_evpn_attr_is_sync(curr_select->attr))) | |
2015 | evpn_zebra_install(bgp, vpn, | |
2016 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest), | |
2017 | curr_select); | |
ec0ab544 AK |
2018 | } |
2019 | ||
6d8c603a AK |
2020 | /* |
2021 | * If the local route was not selected evict it and tell zebra to re-add | |
2022 | * the best remote dest. | |
2023 | * | |
2024 | * Typically a local path added by zebra is expected to be selected as | |
2025 | * best. In which case when a remote path wins as best (later) | |
2026 | * evpn_route_select_install itself evicts the older-local-best path. | |
2027 | * | |
2028 | * However if bgp's add and zebra's add cross paths (race condition) it | |
2029 | * is possible that the local path is no longer the "older" best path. | |
2030 | * It is a path that was never designated as best and hence requires | |
2031 | * additional handling to prevent bgp from injecting and holding on to a | |
2032 | * non-best local path. | |
2033 | */ | |
2034 | static void evpn_cleanup_local_non_best_route(struct bgp *bgp, | |
2035 | struct bgpevpn *vpn, | |
9bcb3eef | 2036 | struct bgp_dest *dest, |
9a8897aa | 2037 | struct bgp_path_info *local_pi) |
6d8c603a | 2038 | { |
6d8c603a | 2039 | /* local path was not picked as the winner; kick it out */ |
b54892e0 | 2040 | if (bgp_debug_zebra(NULL)) |
56ca3b5b | 2041 | zlog_debug("evicting local evpn prefix %pBD as remote won", |
9bcb3eef | 2042 | dest); |
b54892e0 | 2043 | |
9c7edc03 | 2044 | evpn_delete_old_local_route(bgp, vpn, dest, local_pi, NULL); |
9bcb3eef | 2045 | bgp_path_info_reap(dest, local_pi); |
6d8c603a AK |
2046 | |
2047 | /* tell zebra to re-add the best remote path */ | |
9bcb3eef | 2048 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); |
6d8c603a AK |
2049 | } |
2050 | ||
70524092 AK |
2051 | static inline bool bgp_evpn_route_add_l3_ecomm_ok(struct bgpevpn *vpn, |
2052 | const struct prefix_evpn *p, | |
2053 | esi_t *esi) | |
2054 | { | |
2055 | return p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
2056 | && (is_evpn_prefix_ipaddr_v4(p) | |
a2b19693 TA |
2057 | || (is_evpn_prefix_ipaddr_v6(p) |
2058 | && !IN6_IS_ADDR_LINKLOCAL( | |
2059 | &p->prefix.macip_addr.ip.ipaddr_v6))) | |
70524092 AK |
2060 | && CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS) |
2061 | && bgpevpn_get_l3vni(vpn) && bgp_evpn_es_add_l3_ecomm_ok(esi); | |
2062 | } | |
2063 | ||
128ea8ab | 2064 | /* |
2065 | * Create or update EVPN route (of type based on prefix) for specified VNI | |
2066 | * and schedule for processing. | |
2067 | */ | |
d62a17ae | 2068 | static int update_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
f07e1c99 | 2069 | struct prefix_evpn *p, uint8_t flags, |
c44ab6f1 | 2070 | uint32_t seq, esi_t *esi) |
128ea8ab | 2071 | { |
9bcb3eef | 2072 | struct bgp_dest *dest; |
d62a17ae | 2073 | struct attr attr; |
2074 | struct attr *attr_new; | |
1ec31309 | 2075 | int add_l3_ecomm = 0; |
40381db7 | 2076 | struct bgp_path_info *pi; |
d62a17ae | 2077 | afi_t afi = AFI_L2VPN; |
2078 | safi_t safi = SAFI_EVPN; | |
2079 | int route_change; | |
9c7edc03 | 2080 | bool old_is_sync = false; |
852d9f97 | 2081 | bool mac_only = false; |
128ea8ab | 2082 | |
6006b807 | 2083 | memset(&attr, 0, sizeof(attr)); |
128ea8ab | 2084 | |
d62a17ae | 2085 | /* Build path-attribute for this route. */ |
0f05ea43 | 2086 | bgp_attr_default_set(&attr, bgp, BGP_ORIGIN_IGP); |
d62a17ae | 2087 | attr.nexthop = vpn->originator_ip; |
2088 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
2089 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
317f1fe0 | 2090 | attr.sticky = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) ? 1 : 0; |
ead40654 | 2091 | attr.default_gw = CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_GW) ? 1 : 0; |
68e33151 CS |
2092 | attr.router_flag = CHECK_FLAG(flags, |
2093 | ZEBRA_MACIP_TYPE_ROUTER_FLAG) ? 1 : 0; | |
9c7edc03 AK |
2094 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_PROXY_ADVERT)) |
2095 | attr.es_flags |= ATTR_ES_PROXY_ADVERT; | |
2096 | ||
2097 | if (esi && bgp_evpn_is_esi_valid(esi)) { | |
c44ab6f1 | 2098 | memcpy(&attr.esi, esi, sizeof(esi_t)); |
9c7edc03 AK |
2099 | attr.es_flags |= ATTR_ES_IS_LOCAL; |
2100 | } | |
2101 | ||
be41eb68 | 2102 | /* PMSI is only needed for type-3 routes */ |
d03239d0 | 2103 | if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE) { |
be41eb68 | 2104 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL); |
2a3f51cf | 2105 | bgp_attr_set_pmsi_tnl_type(&attr, PMSI_TNLTYPE_INGR_REPL); |
d03239d0 | 2106 | } |
be41eb68 | 2107 | |
2304139a | 2108 | /* router mac is only needed for type-2 routes here. */ |
2109 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { | |
2110 | uint8_t af_flags = 0; | |
2111 | ||
2112 | if (CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_SVI_IP)) | |
2113 | SET_FLAG(af_flags, BGP_EVPN_MACIP_TYPE_SVI_IP); | |
2114 | ||
2115 | bgp_evpn_get_rmac_nexthop(vpn, p, &attr, af_flags); | |
2116 | } | |
2117 | ||
9c7edc03 | 2118 | if (bgp_debug_zebra(NULL)) { |
9c7edc03 AK |
2119 | char buf3[ESI_STR_LEN]; |
2120 | ||
23d0a753 | 2121 | zlog_debug( |
c0d72166 | 2122 | "VRF %s vni %u type-2 route evp %pFX RMAC %pEA nexthop %pI4 esi %s", |
23d0a753 DA |
2123 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) |
2124 | : " ", | |
c0d72166 | 2125 | vpn->vni, p, &attr.rmac, &attr.mp_nexthop_global_in, |
23d0a753 | 2126 | esi_to_str(esi, buf3, sizeof(buf3))); |
9c7edc03 | 2127 | } |
0ca10580 | 2128 | |
a21bd7a3 | 2129 | vni2label(vpn->vni, &(attr.label)); |
128ea8ab | 2130 | |
1ec31309 | 2131 | /* Include L3 VNI related RTs and RMAC for type-2 routes, if they're |
2132 | * IPv4 or IPv6 global addresses and we're advertising L3VNI with | |
2133 | * these routes. | |
2134 | */ | |
70524092 AK |
2135 | add_l3_ecomm = bgp_evpn_route_add_l3_ecomm_ok( |
2136 | vpn, p, (attr.es_flags & ATTR_ES_IS_LOCAL) ? &attr.esi : NULL); | |
1ec31309 | 2137 | |
2138 | /* Set up extended community. */ | |
2139 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
128ea8ab | 2140 | |
852d9f97 SW |
2141 | /* First, create (or fetch) route node within the VNI. |
2142 | * NOTE: There is no RD here. | |
2143 | */ | |
2144 | dest = bgp_evpn_vni_node_get(vpn, p, NULL); | |
2145 | ||
2146 | if ((p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) && | |
2147 | (is_evpn_prefix_ipaddr_none(p) == true)) | |
2148 | mac_only = true; | |
128ea8ab | 2149 | |
d62a17ae | 2150 | /* Create or update route entry. */ |
34c7f35f | 2151 | route_change = update_evpn_route_entry( |
852d9f97 SW |
2152 | bgp, vpn, afi, safi, dest, &attr, |
2153 | (mac_only ? NULL : &p->prefix.macip_addr.mac), NULL /* ip */, 1, | |
34c7f35f | 2154 | &pi, flags, seq, true /* setup_sync */, &old_is_sync); |
40381db7 DS |
2155 | assert(pi); |
2156 | attr_new = pi->attr; | |
128ea8ab | 2157 | |
6d8c603a AK |
2158 | /* lock ri to prevent freeing in evpn_route_select_install */ |
2159 | bgp_path_info_lock(pi); | |
7ab604ab CS |
2160 | |
2161 | /* Perform route selection. Normally, the local route in the | |
2162 | * VNI is expected to win and be the best route. However, if | |
2163 | * there is a race condition where a host moved from local to | |
2164 | * remote and the remote route was received in BGP just prior | |
2165 | * to the local MACIP notification from zebra, the remote | |
2166 | * route would win, and we should evict the defunct local route | |
2167 | * and (re)install the remote route into zebra. | |
2168 | */ | |
9bcb3eef | 2169 | evpn_route_select_install(bgp, vpn, dest); |
6d8c603a | 2170 | /* |
9a8897aa AK |
2171 | * If the new local route was not selected evict it and tell zebra |
2172 | * to re-add the best remote dest. BGP doesn't retain non-best local | |
2173 | * routes. | |
6d8c603a | 2174 | */ |
9c7edc03 | 2175 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { |
9a8897aa | 2176 | route_change = 0; |
9c7edc03 AK |
2177 | } else { |
2178 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
2179 | route_change = 0; | |
2180 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); | |
2181 | } else { | |
2182 | bool new_is_sync; | |
2183 | ||
2184 | /* If the local path already existed and is still the | |
2185 | * best path we need to also check if it transitioned | |
2186 | * from being a sync path to a non-sync path. If it | |
2187 | * it did we need to notify zebra that the sync-path | |
2188 | * has been removed. | |
2189 | */ | |
2190 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
2191 | if (!new_is_sync && old_is_sync) | |
34c7f35f | 2192 | evpn_zebra_uninstall(bgp, vpn, p, pi, true); |
9c7edc03 | 2193 | } |
9a8897aa | 2194 | } |
6d8c603a AK |
2195 | bgp_path_info_unlock(pi); |
2196 | ||
9bcb3eef | 2197 | bgp_dest_unlock_node(dest); |
128ea8ab | 2198 | |
d62a17ae | 2199 | /* If this is a new route or some attribute has changed, export the |
2200 | * route to the global table. The route will be advertised to peers | |
2201 | * from there. Note that this table is a 2-level tree (RD-level + | |
2202 | * Prefix-level) similar to L3VPN routes. | |
2203 | */ | |
2204 | if (route_change) { | |
40381db7 | 2205 | struct bgp_path_info *global_pi; |
128ea8ab | 2206 | |
34c7f35f SW |
2207 | dest = bgp_evpn_global_node_get(bgp->rib[afi][safi], afi, safi, |
2208 | p, &vpn->prd, NULL); | |
852d9f97 SW |
2209 | update_evpn_route_entry( |
2210 | bgp, vpn, afi, safi, dest, attr_new, NULL /* mac */, | |
2211 | NULL /* ip */, 1, &global_pi, flags, seq, | |
2212 | false /* setup_sync */, NULL /* old_is_sync */); | |
128ea8ab | 2213 | |
d62a17ae | 2214 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
2215 | bgp_process(bgp, dest, afi, safi); |
2216 | bgp_dest_unlock_node(dest); | |
d62a17ae | 2217 | } |
128ea8ab | 2218 | |
d62a17ae | 2219 | /* Unintern temporary. */ |
2220 | aspath_unintern(&attr.aspath); | |
128ea8ab | 2221 | |
d62a17ae | 2222 | return 0; |
128ea8ab | 2223 | } |
2224 | ||
50f74cf1 | 2225 | /* |
2226 | * Delete EVPN route entry. | |
2227 | * The entry can be in ESI/VNI table or the global table. | |
2228 | */ | |
185fb14a | 2229 | void delete_evpn_route_entry(struct bgp *bgp, afi_t afi, safi_t safi, |
9bcb3eef | 2230 | struct bgp_dest *dest, |
40381db7 | 2231 | struct bgp_path_info **pi) |
342dd0c6 | 2232 | { |
40381db7 | 2233 | struct bgp_path_info *tmp_pi; |
342dd0c6 | 2234 | |
40381db7 | 2235 | *pi = NULL; |
342dd0c6 | 2236 | |
50f74cf1 | 2237 | /* Now, find matching route. */ |
9bcb3eef | 2238 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; |
6f94b685 | 2239 | tmp_pi = tmp_pi->next) |
40381db7 DS |
2240 | if (tmp_pi->peer == bgp->peer_self |
2241 | && tmp_pi->type == ZEBRA_ROUTE_BGP | |
2242 | && tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
342dd0c6 | 2243 | break; |
2244 | ||
40381db7 | 2245 | *pi = tmp_pi; |
342dd0c6 | 2246 | |
2247 | /* Mark route for delete. */ | |
40381db7 | 2248 | if (tmp_pi) |
9bcb3eef | 2249 | bgp_path_info_delete(dest, tmp_pi); |
342dd0c6 | 2250 | } |
2251 | ||
2252 | /* Delete EVPN type5 route */ | |
996c9314 | 2253 | static int delete_evpn_type5_route(struct bgp *bgp_vrf, struct prefix_evpn *evp) |
342dd0c6 | 2254 | { |
2255 | afi_t afi = AFI_L2VPN; | |
2256 | safi_t safi = SAFI_EVPN; | |
9bcb3eef | 2257 | struct bgp_dest *dest = NULL; |
40381db7 | 2258 | struct bgp_path_info *pi = NULL; |
5e53dce3 | 2259 | struct bgp *bgp_evpn = NULL; /* evpn bgp instance */ |
342dd0c6 | 2260 | |
5e53dce3 T |
2261 | bgp_evpn = bgp_get_evpn(); |
2262 | if (!bgp_evpn) | |
faafdfa8 | 2263 | return 0; |
342dd0c6 | 2264 | |
2265 | /* locate the global route entry for this type-5 prefix */ | |
34c7f35f SW |
2266 | dest = bgp_evpn_global_node_lookup(bgp_evpn->rib[afi][safi], afi, safi, |
2267 | evp, &bgp_vrf->vrf_prd, NULL); | |
9bcb3eef | 2268 | if (!dest) |
342dd0c6 | 2269 | return 0; |
2270 | ||
9bcb3eef | 2271 | delete_evpn_route_entry(bgp_evpn, afi, safi, dest, &pi); |
40381db7 | 2272 | if (pi) |
9bcb3eef DS |
2273 | bgp_process(bgp_evpn, dest, afi, safi); |
2274 | bgp_dest_unlock_node(dest); | |
342dd0c6 | 2275 | return 0; |
2276 | } | |
2277 | ||
128ea8ab | 2278 | /* |
2279 | * Delete EVPN route (of type based on prefix) for specified VNI and | |
2280 | * schedule for processing. | |
2281 | */ | |
d62a17ae | 2282 | static int delete_evpn_route(struct bgp *bgp, struct bgpevpn *vpn, |
2283 | struct prefix_evpn *p) | |
2284 | { | |
9bcb3eef | 2285 | struct bgp_dest *dest, *global_dest; |
40381db7 | 2286 | struct bgp_path_info *pi; |
d62a17ae | 2287 | afi_t afi = AFI_L2VPN; |
2288 | safi_t safi = SAFI_EVPN; | |
2289 | ||
2290 | /* First, locate the route node within the VNI. If it doesn't exist, | |
2291 | * there | |
2292 | * is nothing further to do. | |
852d9f97 | 2293 | * NOTE: There is no RD here. |
d62a17ae | 2294 | */ |
852d9f97 | 2295 | dest = bgp_evpn_vni_node_lookup(vpn, p, NULL); |
9bcb3eef | 2296 | if (!dest) |
d62a17ae | 2297 | return 0; |
2298 | ||
2299 | /* Next, locate route node in the global EVPN routing table. Note that | |
2300 | * this table is a 2-level tree (RD-level + Prefix-level) similar to | |
2301 | * L3VPN routes. | |
2302 | */ | |
34c7f35f SW |
2303 | global_dest = bgp_evpn_global_node_lookup(bgp->rib[afi][safi], afi, |
2304 | safi, p, &vpn->prd, NULL); | |
9bcb3eef | 2305 | if (global_dest) { |
d62a17ae | 2306 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 2307 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
d62a17ae | 2308 | |
2309 | /* Schedule for processing - withdraws to peers happen from | |
2310 | * this table. | |
2311 | */ | |
40381db7 | 2312 | if (pi) |
9bcb3eef DS |
2313 | bgp_process(bgp, global_dest, afi, safi); |
2314 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 2315 | } |
2316 | ||
2317 | /* Delete route entry in the VNI route table. This can just be removed. | |
2318 | */ | |
9bcb3eef | 2319 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
3e3aa88e | 2320 | if (pi) { |
9bcb3eef DS |
2321 | bgp_path_info_reap(dest, pi); |
2322 | evpn_route_select_install(bgp, vpn, dest); | |
3e3aa88e | 2323 | } |
9bcb3eef | 2324 | bgp_dest_unlock_node(dest); |
d62a17ae | 2325 | |
2326 | return 0; | |
128ea8ab | 2327 | } |
2328 | ||
70524092 AK |
2329 | void bgp_evpn_update_type2_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
2330 | struct bgp_dest *dest, | |
2331 | struct bgp_path_info *local_pi, | |
2332 | const char *caller) | |
9c7edc03 AK |
2333 | { |
2334 | afi_t afi = AFI_L2VPN; | |
2335 | safi_t safi = SAFI_EVPN; | |
2336 | struct bgp_path_info *pi; | |
2337 | struct attr attr; | |
2338 | struct attr *attr_new; | |
2339 | uint32_t seq; | |
2340 | int add_l3_ecomm = 0; | |
09319b4e | 2341 | struct bgp_dest *global_dest; |
9c7edc03 | 2342 | struct bgp_path_info *global_pi; |
34c7f35f | 2343 | struct prefix_evpn evp; |
9c7edc03 AK |
2344 | int route_change; |
2345 | bool old_is_sync = false; | |
2346 | ||
2347 | if (CHECK_FLAG(local_pi->flags, BGP_PATH_REMOVED)) | |
2348 | return; | |
2349 | ||
34c7f35f SW |
2350 | /* |
2351 | * VNI table MAC-IP prefixes don't have MAC so make sure it's set from | |
2352 | * path info here. | |
2353 | */ | |
852d9f97 SW |
2354 | if (is_evpn_prefix_ipaddr_none((struct prefix_evpn *)&dest->p)) { |
2355 | /* VNI MAC -> Global */ | |
2356 | evpn_type2_prefix_global_copy( | |
2357 | &evp, (struct prefix_evpn *)&dest->p, NULL /* mac */, | |
2358 | evpn_type2_path_info_get_ip(local_pi)); | |
2359 | } else { | |
2360 | /* VNI IP -> Global */ | |
2361 | evpn_type2_prefix_global_copy( | |
2362 | &evp, (struct prefix_evpn *)&dest->p, | |
2363 | evpn_type2_path_info_get_mac(local_pi), NULL /* ip */); | |
2364 | } | |
34c7f35f | 2365 | |
9c7edc03 AK |
2366 | /* |
2367 | * Build attribute per local route as the MAC mobility and | |
2368 | * some other values could differ for different routes. The | |
2369 | * attributes will be shared in the hash table. | |
2370 | */ | |
0f05ea43 | 2371 | bgp_attr_default_set(&attr, bgp, BGP_ORIGIN_IGP); |
9c7edc03 AK |
2372 | attr.nexthop = vpn->originator_ip; |
2373 | attr.mp_nexthop_global_in = vpn->originator_ip; | |
2374 | attr.mp_nexthop_len = BGP_ATTR_NHLEN_IPV4; | |
2375 | attr.sticky = (local_pi->attr->sticky) ? 1 : 0; | |
2376 | attr.router_flag = (local_pi->attr->router_flag) ? 1 : 0; | |
2377 | attr.es_flags = local_pi->attr->es_flags; | |
2378 | if (local_pi->attr->default_gw) { | |
2379 | attr.default_gw = 1; | |
34c7f35f | 2380 | if (is_evpn_prefix_ipaddr_v6(&evp)) |
9c7edc03 AK |
2381 | attr.router_flag = 1; |
2382 | } | |
2383 | memcpy(&attr.esi, &local_pi->attr->esi, sizeof(esi_t)); | |
34c7f35f | 2384 | bgp_evpn_get_rmac_nexthop(vpn, &evp, &attr, local_pi->extra->af_flags); |
9c7edc03 AK |
2385 | vni2label(vpn->vni, &(attr.label)); |
2386 | /* Add L3 VNI RTs and RMAC for non IPv6 link-local if | |
2387 | * using L3 VNI for type-2 routes also. | |
2388 | */ | |
70524092 | 2389 | add_l3_ecomm = bgp_evpn_route_add_l3_ecomm_ok( |
34c7f35f | 2390 | vpn, &evp, |
70524092 | 2391 | (attr.es_flags & ATTR_ES_IS_LOCAL) ? &attr.esi : NULL); |
9c7edc03 AK |
2392 | |
2393 | /* Set up extended community. */ | |
2394 | build_evpn_route_extcomm(vpn, &attr, add_l3_ecomm); | |
2395 | seq = mac_mobility_seqnum(local_pi->attr); | |
2396 | ||
2397 | if (bgp_debug_zebra(NULL)) { | |
9c7edc03 AK |
2398 | char buf3[ESI_STR_LEN]; |
2399 | ||
23d0a753 | 2400 | zlog_debug( |
c0d72166 | 2401 | "VRF %s vni %u evp %pFX RMAC %pEA nexthop %pI4 esi %s esf 0x%x from %s", |
23d0a753 DA |
2402 | vpn->bgp_vrf ? vrf_id_to_name(vpn->bgp_vrf->vrf_id) |
2403 | : " ", | |
34c7f35f | 2404 | vpn->vni, &evp, &attr.rmac, &attr.mp_nexthop_global_in, |
23d0a753 DA |
2405 | esi_to_str(&attr.esi, buf3, sizeof(buf3)), |
2406 | attr.es_flags, caller); | |
9c7edc03 AK |
2407 | } |
2408 | ||
2409 | /* Update the route entry. */ | |
09319b4e | 2410 | route_change = update_evpn_route_entry( |
852d9f97 SW |
2411 | bgp, vpn, afi, safi, dest, &attr, NULL /* mac */, NULL /* ip */, |
2412 | 0, &pi, 0, seq, true /* setup_sync */, &old_is_sync); | |
9c7edc03 AK |
2413 | |
2414 | assert(pi); | |
2415 | attr_new = pi->attr; | |
2416 | /* lock ri to prevent freeing in evpn_route_select_install */ | |
2417 | bgp_path_info_lock(pi); | |
2418 | ||
2419 | /* Perform route selection. Normally, the local route in the | |
2420 | * VNI is expected to win and be the best route. However, | |
2421 | * under peculiar situations (e.g., tunnel (next hop) IP change | |
2422 | * that causes best selection to be based on next hop), a | |
2423 | * remote route could win. If the local route is the best, | |
2424 | * ensure it is updated in the global EVPN route table and | |
2425 | * advertised to peers; otherwise, ensure it is evicted and | |
2426 | * (re)install the remote route into zebra. | |
2427 | */ | |
09319b4e | 2428 | evpn_route_select_install(bgp, vpn, dest); |
9c7edc03 AK |
2429 | |
2430 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
2431 | route_change = 0; | |
2432 | } else { | |
2433 | if (!CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)) { | |
2434 | route_change = 0; | |
09319b4e | 2435 | evpn_cleanup_local_non_best_route(bgp, vpn, dest, pi); |
9c7edc03 AK |
2436 | } else { |
2437 | bool new_is_sync; | |
2438 | ||
2439 | /* If the local path already existed and is still the | |
2440 | * best path we need to also check if it transitioned | |
2441 | * from being a sync path to a non-sync path. If it | |
2442 | * it did we need to notify zebra that the sync-path | |
2443 | * has been removed. | |
2444 | */ | |
2445 | new_is_sync = bgp_evpn_attr_is_sync(pi->attr); | |
2446 | if (!new_is_sync && old_is_sync) | |
34c7f35f | 2447 | evpn_zebra_uninstall(bgp, vpn, &evp, pi, true); |
9c7edc03 AK |
2448 | } |
2449 | } | |
2450 | ||
2451 | ||
2452 | /* unlock pi */ | |
2453 | bgp_path_info_unlock(pi); | |
2454 | ||
2455 | if (route_change) { | |
2456 | /* Update route in global routing table. */ | |
34c7f35f SW |
2457 | global_dest = bgp_evpn_global_node_get( |
2458 | bgp->rib[afi][safi], afi, safi, &evp, &vpn->prd, NULL); | |
09319b4e DS |
2459 | assert(global_dest); |
2460 | update_evpn_route_entry( | |
852d9f97 SW |
2461 | bgp, vpn, afi, safi, global_dest, attr_new, |
2462 | NULL /* mac */, NULL /* ip */, 0, &global_pi, 0, | |
2463 | mac_mobility_seqnum(attr_new), false /* setup_sync */, | |
2464 | NULL /* old_is_sync */); | |
9c7edc03 AK |
2465 | |
2466 | /* Schedule for processing and unlock node. */ | |
09319b4e DS |
2467 | bgp_process(bgp, global_dest, afi, safi); |
2468 | bgp_dest_unlock_node(global_dest); | |
9c7edc03 AK |
2469 | } |
2470 | ||
2471 | /* Unintern temporary. */ | |
2472 | aspath_unintern(&attr.aspath); | |
2473 | } | |
2474 | ||
852d9f97 SW |
2475 | static void update_type2_route(struct bgp *bgp, struct bgpevpn *vpn, |
2476 | struct bgp_dest *dest) | |
2477 | { | |
2478 | struct bgp_path_info *tmp_pi; | |
2479 | ||
2480 | const struct prefix_evpn *evp = | |
2481 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
2482 | ||
2483 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2484 | return; | |
2485 | ||
2486 | /* Identify local route. */ | |
2487 | for (tmp_pi = bgp_dest_get_bgp_path_info(dest); tmp_pi; | |
2488 | tmp_pi = tmp_pi->next) { | |
2489 | if (tmp_pi->peer == bgp->peer_self && | |
2490 | tmp_pi->type == ZEBRA_ROUTE_BGP && | |
2491 | tmp_pi->sub_type == BGP_ROUTE_STATIC) | |
2492 | break; | |
2493 | } | |
2494 | ||
2495 | if (!tmp_pi) | |
2496 | return; | |
2497 | ||
2498 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, tmp_pi, __func__); | |
2499 | } | |
2500 | ||
128ea8ab | 2501 | /* |
2502 | * Update all type-2 (MACIP) local routes for this VNI - these should also | |
2503 | * be scheduled for advertise to peers. | |
2504 | */ | |
852d9f97 | 2505 | static void update_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
d62a17ae | 2506 | { |
9bcb3eef | 2507 | struct bgp_dest *dest; |
d62a17ae | 2508 | |
852d9f97 SW |
2509 | /* Walk this VNI's route MAC & IP table and update local type-2 |
2510 | * routes. For any routes updated, update corresponding entry in the | |
2511 | * global table too. | |
d62a17ae | 2512 | */ |
852d9f97 SW |
2513 | for (dest = bgp_table_top(vpn->mac_table); dest; |
2514 | dest = bgp_route_next(dest)) | |
2515 | update_type2_route(bgp, vpn, dest); | |
d62a17ae | 2516 | |
852d9f97 SW |
2517 | for (dest = bgp_table_top(vpn->ip_table); dest; |
2518 | dest = bgp_route_next(dest)) | |
2519 | update_type2_route(bgp, vpn, dest); | |
128ea8ab | 2520 | } |
2521 | ||
2522 | /* | |
2523 | * Delete all type-2 (MACIP) local routes for this VNI - only from the | |
2524 | * global routing table. These are also scheduled for withdraw from peers. | |
2525 | */ | |
17151ae9 | 2526 | static void delete_global_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2527 | { |
d62a17ae | 2528 | afi_t afi; |
2529 | safi_t safi; | |
9bcb3eef | 2530 | struct bgp_dest *rddest, *dest; |
d62a17ae | 2531 | struct bgp_table *table; |
40381db7 | 2532 | struct bgp_path_info *pi; |
128ea8ab | 2533 | |
d62a17ae | 2534 | afi = AFI_L2VPN; |
2535 | safi = SAFI_EVPN; | |
128ea8ab | 2536 | |
9bcb3eef DS |
2537 | rddest = bgp_node_lookup(bgp->rib[afi][safi], |
2538 | (struct prefix *)&vpn->prd); | |
17151ae9 | 2539 | if (rddest) { |
9bcb3eef DS |
2540 | table = bgp_dest_get_bgp_table_info(rddest); |
2541 | for (dest = bgp_table_top(table); dest; | |
2542 | dest = bgp_route_next(dest)) { | |
2543 | const struct prefix_evpn *evp = | |
2544 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
2545 | dest); | |
128ea8ab | 2546 | |
d62a17ae | 2547 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) |
2548 | continue; | |
128ea8ab | 2549 | |
9bcb3eef | 2550 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); |
40381db7 | 2551 | if (pi) |
9bcb3eef | 2552 | bgp_process(bgp, dest, afi, safi); |
d62a17ae | 2553 | } |
128ea8ab | 2554 | |
17151ae9 | 2555 | /* Unlock RD node. */ |
9bcb3eef | 2556 | bgp_dest_unlock_node(rddest); |
17151ae9 | 2557 | } |
128ea8ab | 2558 | } |
2559 | ||
852d9f97 SW |
2560 | static void delete_vni_type2_route(struct bgp *bgp, struct bgp_dest *dest) |
2561 | { | |
2562 | struct bgp_path_info *pi; | |
2563 | afi_t afi = AFI_L2VPN; | |
2564 | safi_t safi = SAFI_EVPN; | |
2565 | ||
2566 | const struct prefix_evpn *evp = | |
2567 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
2568 | ||
2569 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
2570 | return; | |
2571 | ||
2572 | delete_evpn_route_entry(bgp, afi, safi, dest, &pi); | |
2573 | ||
2574 | /* Route entry in local table gets deleted immediately. */ | |
2575 | if (pi) | |
2576 | bgp_path_info_reap(dest, pi); | |
2577 | } | |
2578 | ||
2579 | static void delete_vni_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) | |
2580 | { | |
2581 | struct bgp_dest *dest; | |
2582 | ||
2583 | /* Next, walk this VNI's MAC & IP route table and delete local type-2 | |
2584 | * routes. | |
2585 | */ | |
2586 | for (dest = bgp_table_top(vpn->mac_table); dest; | |
2587 | dest = bgp_route_next(dest)) | |
2588 | delete_vni_type2_route(bgp, dest); | |
2589 | ||
2590 | for (dest = bgp_table_top(vpn->ip_table); dest; | |
2591 | dest = bgp_route_next(dest)) | |
2592 | delete_vni_type2_route(bgp, dest); | |
2593 | } | |
2594 | ||
128ea8ab | 2595 | /* |
2596 | * Delete all type-2 (MACIP) local routes for this VNI - from the global | |
2597 | * table as well as the per-VNI route table. | |
2598 | */ | |
852d9f97 | 2599 | static void delete_all_type2_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2600 | { |
d62a17ae | 2601 | /* First, walk the global route table for this VNI's type-2 local |
2602 | * routes. | |
2603 | * EVPN routes are a 2-level table, first get the RD table. | |
2604 | */ | |
2605 | delete_global_type2_routes(bgp, vpn); | |
852d9f97 | 2606 | delete_vni_type2_routes(bgp, vpn); |
128ea8ab | 2607 | } |
2608 | ||
2609 | /* | |
2610 | * Delete all routes in the per-VNI route table. | |
2611 | */ | |
852d9f97 | 2612 | static void delete_all_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2613 | { |
9bcb3eef | 2614 | struct bgp_dest *dest; |
40381db7 | 2615 | struct bgp_path_info *pi, *nextpi; |
128ea8ab | 2616 | |
852d9f97 SW |
2617 | /* Walk this VNI's MAC & IP route table and delete all routes. */ |
2618 | for (dest = bgp_table_top(vpn->mac_table); dest; | |
9bcb3eef DS |
2619 | dest = bgp_route_next(dest)) { |
2620 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
6f94b685 | 2621 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { |
021b6596 | 2622 | bgp_evpn_remote_ip_hash_del(vpn, pi); |
9bcb3eef DS |
2623 | bgp_path_info_delete(dest, pi); |
2624 | bgp_path_info_reap(dest, pi); | |
d62a17ae | 2625 | } |
2626 | } | |
128ea8ab | 2627 | |
852d9f97 SW |
2628 | for (dest = bgp_table_top(vpn->ip_table); dest; |
2629 | dest = bgp_route_next(dest)) { | |
2630 | for (pi = bgp_dest_get_bgp_path_info(dest); | |
2631 | (pi != NULL) && (nextpi = pi->next, 1); pi = nextpi) { | |
2632 | bgp_path_info_delete(dest, pi); | |
2633 | bgp_path_info_reap(dest, pi); | |
2634 | } | |
2635 | } | |
128ea8ab | 2636 | } |
2637 | ||
833b8a50 AK |
2638 | /* BUM traffic flood mode per-l2-vni */ |
2639 | static int bgp_evpn_vni_flood_mode_get(struct bgp *bgp, | |
2640 | struct bgpevpn *vpn) | |
2641 | { | |
2642 | /* if flooding has been globally disabled per-vni mode is | |
2643 | * not relevant | |
2644 | */ | |
2645 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
2646 | return VXLAN_FLOOD_DISABLED; | |
2647 | ||
2648 | /* if mcast group ip has been specified we use a PIM-SM MDT */ | |
2649 | if (vpn->mcast_grp.s_addr != INADDR_ANY) | |
2650 | return VXLAN_FLOOD_PIM_SM; | |
2651 | ||
2652 | /* default is ingress replication */ | |
2653 | return VXLAN_FLOOD_HEAD_END_REPL; | |
2654 | } | |
2655 | ||
128ea8ab | 2656 | /* |
2657 | * Update (and advertise) local routes for a VNI. Invoked upon the VNI | |
2658 | * export RT getting modified or change to tunnel IP. Note that these | |
2659 | * situations need the route in the per-VNI table as well as the global | |
2660 | * table to be updated (as attributes change). | |
2661 | */ | |
0ca10580 | 2662 | int update_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2663 | { |
d62a17ae | 2664 | int ret; |
2665 | struct prefix_evpn p; | |
128ea8ab | 2666 | |
9c49ac74 AD |
2667 | update_type1_routes_for_evi(bgp, vpn); |
2668 | ||
d62a17ae | 2669 | /* Update and advertise the type-3 route (only one) followed by the |
2670 | * locally learnt type-2 routes (MACIP) - for this VNI. | |
fd069644 DS |
2671 | * |
2672 | * RT-3 only if doing head-end replication | |
d62a17ae | 2673 | */ |
833b8a50 AK |
2674 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
2675 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 2676 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 2677 | ret = update_evpn_route(bgp, vpn, &p, 0, 0, NULL); |
fd069644 DS |
2678 | if (ret) |
2679 | return ret; | |
2680 | } | |
128ea8ab | 2681 | |
852d9f97 SW |
2682 | update_all_type2_routes(bgp, vpn); |
2683 | return 0; | |
128ea8ab | 2684 | } |
2685 | ||
2686 | /* | |
2687 | * Delete (and withdraw) local routes for specified VNI from the global | |
2688 | * table and per-VNI table. After this, remove all other routes from | |
2689 | * the per-VNI table. Invoked upon the VNI being deleted or EVPN | |
2690 | * (advertise-all-vni) being disabled. | |
2691 | */ | |
d62a17ae | 2692 | static int delete_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 2693 | { |
d62a17ae | 2694 | int ret; |
2695 | struct prefix_evpn p; | |
128ea8ab | 2696 | |
d62a17ae | 2697 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
2698 | * followed by type-3 routes (only one) - for this VNI. | |
2699 | */ | |
852d9f97 | 2700 | delete_all_type2_routes(bgp, vpn); |
128ea8ab | 2701 | |
d62a17ae | 2702 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
2703 | ret = delete_evpn_route(bgp, vpn, &p); | |
2704 | if (ret) | |
2705 | return ret; | |
128ea8ab | 2706 | |
d62a17ae | 2707 | /* Delete all routes from the per-VNI table. */ |
852d9f97 SW |
2708 | delete_all_vni_routes(bgp, vpn); |
2709 | return 0; | |
128ea8ab | 2710 | } |
2711 | ||
76d07c7a AK |
2712 | /* |
2713 | * There is a flood mcast IP address change. Update the mcast-grp and | |
2714 | * remove the type-3 route if any. A new type-3 route will be generated | |
2715 | * post tunnel_ip update if the new flood mode is head-end-replication. | |
2716 | */ | |
2717 | static int bgp_evpn_mcast_grp_change(struct bgp *bgp, struct bgpevpn *vpn, | |
2718 | struct in_addr mcast_grp) | |
2719 | { | |
2720 | struct prefix_evpn p; | |
2721 | ||
2722 | vpn->mcast_grp = mcast_grp; | |
2723 | ||
2724 | if (is_vni_live(vpn)) { | |
2725 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2726 | delete_evpn_route(bgp, vpn, &p); | |
2727 | } | |
2728 | ||
2729 | return 0; | |
2730 | } | |
2731 | ||
128ea8ab | 2732 | /* |
d1911c26 | 2733 | * There is a tunnel endpoint IP address change for this VNI, delete |
2734 | * prior type-3 route (if needed) and update. | |
2735 | * Note: Route re-advertisement happens elsewhere after other processing | |
2736 | * other changes. | |
128ea8ab | 2737 | */ |
d62a17ae | 2738 | static int handle_tunnel_ip_change(struct bgp *bgp, struct bgpevpn *vpn, |
2739 | struct in_addr originator_ip) | |
128ea8ab | 2740 | { |
d62a17ae | 2741 | struct prefix_evpn p; |
128ea8ab | 2742 | |
ddd16ed5 MK |
2743 | /* If VNI is not live, we only need to update the originator ip */ |
2744 | if (!is_vni_live(vpn)) { | |
2745 | vpn->originator_ip = originator_ip; | |
2746 | return 0; | |
2747 | } | |
2748 | ||
db0e1937 MK |
2749 | /* Update the tunnel-ip hash */ |
2750 | bgp_tip_del(bgp, &vpn->originator_ip); | |
2751 | bgp_tip_add(bgp, &originator_ip); | |
2752 | ||
2753 | /* filter routes as martian nexthop db has changed */ | |
2754 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
2755 | ||
d62a17ae | 2756 | /* Need to withdraw type-3 route as the originator IP is part |
2757 | * of the key. | |
2758 | */ | |
2759 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
2760 | delete_evpn_route(bgp, vpn, &p); | |
128ea8ab | 2761 | |
d62a17ae | 2762 | /* Update the tunnel IP and re-advertise all routes for this VNI. */ |
2763 | vpn->originator_ip = originator_ip; | |
d1911c26 | 2764 | return 0; |
185fb14a | 2765 | } |
50f74cf1 | 2766 | |
185fb14a AK |
2767 | static struct bgp_path_info * |
2768 | bgp_create_evpn_bgp_path_info(struct bgp_path_info *parent_pi, | |
2769 | struct bgp_dest *dest, struct attr *attr) | |
2770 | { | |
2771 | struct attr *attr_new; | |
2772 | struct bgp_path_info *pi; | |
50f74cf1 | 2773 | |
185fb14a AK |
2774 | /* Add (or update) attribute to hash. */ |
2775 | attr_new = bgp_attr_intern(attr); | |
50f74cf1 | 2776 | |
185fb14a AK |
2777 | /* Create new route with its attribute. */ |
2778 | pi = info_make(parent_pi->type, BGP_ROUTE_IMPORTED, 0, parent_pi->peer, | |
2779 | attr_new, dest); | |
2780 | SET_FLAG(pi->flags, BGP_PATH_VALID); | |
2781 | bgp_path_info_extra_get(pi); | |
2782 | pi->extra->parent = bgp_path_info_lock(parent_pi); | |
2783 | bgp_dest_lock_node((struct bgp_dest *)parent_pi->net); | |
2784 | if (parent_pi->extra) { | |
2785 | memcpy(&pi->extra->label, &parent_pi->extra->label, | |
2786 | sizeof(pi->extra->label)); | |
2787 | pi->extra->num_labels = parent_pi->extra->num_labels; | |
56c70d87 | 2788 | pi->extra->igpmetric = parent_pi->extra->igpmetric; |
50f74cf1 | 2789 | } |
34c7f35f | 2790 | |
185fb14a | 2791 | bgp_path_info_add(dest, pi); |
50f74cf1 | 2792 | |
185fb14a | 2793 | return pi; |
50f74cf1 | 2794 | } |
2795 | ||
d3135ba3 | 2796 | /* |
2797 | * Install route entry into the VRF routing table and invoke route selection. | |
2798 | */ | |
2799 | static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 2800 | const struct prefix_evpn *evp, |
40381db7 | 2801 | struct bgp_path_info *parent_pi) |
d3135ba3 | 2802 | { |
9bcb3eef | 2803 | struct bgp_dest *dest; |
40381db7 | 2804 | struct bgp_path_info *pi; |
1ec31309 | 2805 | struct attr attr; |
d3135ba3 | 2806 | struct attr *attr_new; |
c4edf708 | 2807 | int ret = 0; |
d3135ba3 | 2808 | struct prefix p; |
2809 | struct prefix *pp = &p; | |
2810 | afi_t afi = 0; | |
2811 | safi_t safi = 0; | |
5f0c5ec8 | 2812 | bool new_pi = false; |
58bff4d1 AK |
2813 | bool use_l3nhg = false; |
2814 | bool is_l3nhg_active = false; | |
a2299aba | 2815 | char buf1[INET6_ADDRSTRLEN]; |
d3135ba3 | 2816 | |
2817 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 2818 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 2819 | |
2dbe669b | 2820 | if (bgp_debug_zebra(NULL)) |
996c9314 | 2821 | zlog_debug( |
2dbe669b DA |
2822 | "vrf %s: import evpn prefix %pFX parent %p flags 0x%x", |
2823 | vrf_id_to_name(bgp_vrf->vrf_id), evp, parent_pi, | |
2824 | parent_pi->flags); | |
1eb88002 | 2825 | |
d3135ba3 | 2826 | /* Create (or fetch) route within the VRF. */ |
2827 | /* NOTE: There is no RD here. */ | |
3714a385 | 2828 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 2829 | afi = AFI_IP; |
2830 | safi = SAFI_UNICAST; | |
9bcb3eef | 2831 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
3714a385 | 2832 | } else if (is_evpn_prefix_ipaddr_v6(evp)) { |
d3135ba3 | 2833 | afi = AFI_IP6; |
2834 | safi = SAFI_UNICAST; | |
9bcb3eef | 2835 | dest = bgp_node_get(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 2836 | } else |
2837 | return 0; | |
2838 | ||
1ec31309 | 2839 | /* EVPN routes currently only support a IPv4 next hop which corresponds |
2840 | * to the remote VTEP. When importing into a VRF, if it is IPv6 host | |
450e362d | 2841 | * or prefix route, we have to convert the next hop to an IPv4-mapped |
2842 | * address for the rest of the code to flow through. In the case of IPv4, | |
2843 | * make sure to set the flag for next hop attribute. | |
1ec31309 | 2844 | */ |
6f4f49b2 | 2845 | attr = *parent_pi->attr; |
a2299aba AD |
2846 | if (attr.evpn_overlay.type != OVERLAY_INDEX_GATEWAY_IP) { |
2847 | if (afi == AFI_IP6) | |
2848 | evpn_convert_nexthop_to_ipv6(&attr); | |
7226bc40 TA |
2849 | else { |
2850 | attr.nexthop = attr.mp_nexthop_global_in; | |
a2299aba | 2851 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); |
7226bc40 | 2852 | } |
a2299aba AD |
2853 | } else { |
2854 | ||
2855 | /* | |
2856 | * If gateway IP overlay index is specified in the NLRI of | |
2857 | * EVPN RT-5, this gateway IP should be used as the nexthop | |
2858 | * for the prefix in the VRF | |
2859 | */ | |
2860 | if (bgp_debug_zebra(NULL)) { | |
2861 | zlog_debug( | |
2862 | "Install gateway IP %s as nexthop for prefix %pFX in vrf %s", | |
2863 | inet_ntop(pp->family, &attr.evpn_overlay.gw_ip, | |
2864 | buf1, sizeof(buf1)), pp, | |
2865 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
2866 | } | |
2867 | ||
2868 | if (afi == AFI_IP6) { | |
2869 | memcpy(&attr.mp_nexthop_global, | |
860e740b | 2870 | &attr.evpn_overlay.gw_ip.ipaddr_v6, |
a2299aba AD |
2871 | sizeof(struct in6_addr)); |
2872 | attr.mp_nexthop_len = IPV6_MAX_BYTELEN; | |
2873 | } else { | |
860e740b | 2874 | attr.nexthop = attr.evpn_overlay.gw_ip.ipaddr_v4; |
a2299aba AD |
2875 | attr.flag |= ATTR_FLAG_BIT(BGP_ATTR_NEXT_HOP); |
2876 | } | |
2877 | } | |
1ec31309 | 2878 | |
58bff4d1 AK |
2879 | bgp_evpn_es_vrf_use_nhg(bgp_vrf, &parent_pi->attr->esi, &use_l3nhg, |
2880 | &is_l3nhg_active, NULL); | |
2881 | if (use_l3nhg) | |
2882 | attr.es_flags |= ATTR_ES_L3_NHG_USE; | |
2883 | if (is_l3nhg_active) | |
2884 | attr.es_flags |= ATTR_ES_L3_NHG_ACTIVE; | |
2885 | ||
d3135ba3 | 2886 | /* Check if route entry is already present. */ |
9bcb3eef | 2887 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2888 | if (pi->extra |
2889 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 2890 | break; |
2891 | ||
5f0c5ec8 | 2892 | if (!pi) { |
9bcb3eef | 2893 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, &attr); |
5f0c5ec8 | 2894 | new_pi = true; |
2895 | } else { | |
40381db7 DS |
2896 | if (attrhash_cmp(pi->attr, &attr) |
2897 | && !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) { | |
9bcb3eef | 2898 | bgp_dest_unlock_node(dest); |
d3135ba3 | 2899 | return 0; |
2900 | } | |
2901 | /* The attribute has changed. */ | |
2902 | /* Add (or update) attribute to hash. */ | |
1ec31309 | 2903 | attr_new = bgp_attr_intern(&attr); |
d3135ba3 | 2904 | |
2905 | /* Restore route, if needed. */ | |
40381db7 | 2906 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 2907 | bgp_path_info_restore(dest, pi); |
d3135ba3 | 2908 | |
2909 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
2910 | if ((afi == AFI_IP |
2911 | && !IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) | |
2912 | || (afi == AFI_IP6 | |
2913 | && !IPV6_ADDR_SAME(&pi->attr->mp_nexthop_global, | |
2914 | &attr_new->mp_nexthop_global))) | |
2915 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
d3135ba3 | 2916 | |
9bcb3eef | 2917 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); |
d3135ba3 | 2918 | /* Unintern existing, set to new. */ |
40381db7 DS |
2919 | bgp_attr_unintern(&pi->attr); |
2920 | pi->attr = attr_new; | |
083ec940 | 2921 | pi->uptime = monotime(NULL); |
d3135ba3 | 2922 | } |
a2299aba AD |
2923 | |
2924 | /* Gateway IP nexthop should be resolved */ | |
2925 | if (attr.evpn_overlay.type == OVERLAY_INDEX_GATEWAY_IP) { | |
2926 | if (bgp_find_or_add_nexthop(bgp_vrf, bgp_vrf, afi, safi, pi, | |
654a5978 | 2927 | NULL, 0, NULL)) |
a2299aba AD |
2928 | bgp_path_info_set_flag(dest, pi, BGP_PATH_VALID); |
2929 | else { | |
2930 | if (BGP_DEBUG(nht, NHT)) { | |
2931 | inet_ntop(pp->family, | |
2932 | &attr.evpn_overlay.gw_ip, | |
2933 | buf1, sizeof(buf1)); | |
2934 | zlog_debug("%s: gateway IP NH unresolved", | |
2935 | buf1); | |
2936 | } | |
2937 | bgp_path_info_unset_flag(dest, pi, BGP_PATH_VALID); | |
2938 | } | |
2939 | } else { | |
2940 | ||
2941 | /* as it is an importation, change nexthop */ | |
2942 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ANNC_NH_SELF); | |
2943 | } | |
d3135ba3 | 2944 | |
090efa2f AK |
2945 | /* Link path to evpn nexthop */ |
2946 | bgp_evpn_path_nh_add(bgp_vrf, pi); | |
2947 | ||
9bcb3eef | 2948 | bgp_aggregate_increment(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 2949 | safi); |
b49cdf4c | 2950 | |
d3135ba3 | 2951 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 2952 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 2953 | |
7452e879 | 2954 | /* Process for route leaking. */ |
2955 | vpn_leak_from_vrf_update(bgp_get_default(), bgp_vrf, pi); | |
2956 | ||
9bcb3eef | 2957 | bgp_dest_unlock_node(dest); |
3c11d70a | 2958 | |
5f0c5ec8 | 2959 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
2960 | zlog_debug("... %s pi dest %p (l %d) pi %p (l %d, f 0x%x)", |
2961 | new_pi ? "new" : "update", dest, | |
2962 | bgp_dest_get_lock_count(dest), pi, pi->lock, | |
2963 | pi->flags); | |
5f0c5ec8 | 2964 | |
d3135ba3 | 2965 | return ret; |
2966 | } | |
2967 | ||
128ea8ab | 2968 | /* |
852d9f97 | 2969 | * Common handling for vni route tables install/selection. |
128ea8ab | 2970 | */ |
852d9f97 SW |
2971 | static int install_evpn_route_entry_in_vni_common( |
2972 | struct bgp *bgp, struct bgpevpn *vpn, const struct prefix_evpn *p, | |
2973 | struct bgp_dest *dest, struct bgp_path_info *parent_pi) | |
d62a17ae | 2974 | { |
40381db7 | 2975 | struct bgp_path_info *pi; |
9c7edc03 | 2976 | struct bgp_path_info *local_pi; |
d62a17ae | 2977 | struct attr *attr_new; |
2978 | int ret; | |
74efb822 AK |
2979 | bool old_local_es = false; |
2980 | bool new_local_es; | |
c44ab6f1 | 2981 | |
d62a17ae | 2982 | /* Check if route entry is already present. */ |
9bcb3eef | 2983 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
2984 | if (pi->extra |
2985 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d62a17ae | 2986 | break; |
2987 | ||
bd0254af MS |
2988 | if (!pi) { |
2989 | /* Create an info */ | |
26c03e43 | 2990 | pi = bgp_create_evpn_bgp_path_info(parent_pi, dest, |
4e72ff72 | 2991 | parent_pi->attr); |
34c7f35f | 2992 | |
852d9f97 SW |
2993 | if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
2994 | if (is_evpn_type2_dest_ipaddr_none(dest)) | |
2995 | evpn_type2_path_info_set_ip( | |
2996 | pi, p->prefix.macip_addr.ip); | |
2997 | else | |
2998 | evpn_type2_path_info_set_mac( | |
2999 | pi, p->prefix.macip_addr.mac); | |
3000 | } | |
34c7f35f | 3001 | |
74efb822 | 3002 | new_local_es = bgp_evpn_attr_is_local_es(pi->attr); |
bd0254af | 3003 | } else { |
b5118501 TA |
3004 | /* Return early if attributes haven't changed |
3005 | * and dest isn't flagged for removal. | |
3006 | * dest will be unlocked by either | |
3007 | * install_evpn_route_entry_in_vni_mac() or | |
3008 | * install_evpn_route_entry_in_vni_ip() | |
3009 | */ | |
3010 | if (attrhash_cmp(pi->attr, parent_pi->attr) && | |
3011 | !CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) | |
d62a17ae | 3012 | return 0; |
d62a17ae | 3013 | /* The attribute has changed. */ |
3014 | /* Add (or update) attribute to hash. */ | |
40381db7 | 3015 | attr_new = bgp_attr_intern(parent_pi->attr); |
d62a17ae | 3016 | |
50f74cf1 | 3017 | /* Restore route, if needed. */ |
40381db7 | 3018 | if (CHECK_FLAG(pi->flags, BGP_PATH_REMOVED)) |
9bcb3eef | 3019 | bgp_path_info_restore(dest, pi); |
50f74cf1 | 3020 | |
3021 | /* Mark if nexthop has changed. */ | |
40381db7 DS |
3022 | if (!IPV4_ADDR_SAME(&pi->attr->nexthop, &attr_new->nexthop)) |
3023 | SET_FLAG(pi->flags, BGP_PATH_IGP_CHANGED); | |
50f74cf1 | 3024 | |
74efb822 AK |
3025 | old_local_es = bgp_evpn_attr_is_local_es(pi->attr); |
3026 | new_local_es = bgp_evpn_attr_is_local_es(attr_new); | |
3027 | /* If ESI is different or if its type has changed we | |
3028 | * need to reinstall the path in zebra | |
3029 | */ | |
3030 | if ((old_local_es != new_local_es) | |
3031 | || memcmp(&pi->attr->esi, &attr_new->esi, | |
3032 | sizeof(attr_new->esi))) { | |
3033 | ||
3034 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) | |
3035 | zlog_debug("VNI %d path %pFX chg to %s es", | |
3036 | vpn->vni, &pi->net->p, | |
3037 | new_local_es ? "local" | |
3038 | : "non-local"); | |
3039 | bgp_path_info_set_flag(dest, pi, BGP_PATH_ATTR_CHANGED); | |
3040 | } | |
3041 | ||
50f74cf1 | 3042 | /* Unintern existing, set to new. */ |
40381db7 DS |
3043 | bgp_attr_unintern(&pi->attr); |
3044 | pi->attr = attr_new; | |
083ec940 | 3045 | pi->uptime = monotime(NULL); |
50f74cf1 | 3046 | } |
3047 | ||
021b6596 AD |
3048 | /* Add this route to remote IP hashtable */ |
3049 | bgp_evpn_remote_ip_hash_add(vpn, pi); | |
3050 | ||
50f74cf1 | 3051 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 3052 | ret = evpn_route_select_install(bgp, vpn, dest); |
50f74cf1 | 3053 | |
9c7edc03 AK |
3054 | /* if the best path is a local path with a non-zero ES |
3055 | * sync info against the local path may need to be updated | |
3056 | * when a remote path is added/updated (including changes | |
3057 | * from sync-path to remote-path) | |
3058 | */ | |
3059 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
74efb822 | 3060 | if (local_pi && (old_local_es || new_local_es)) |
9c7edc03 | 3061 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, |
74efb822 | 3062 | __func__); |
852d9f97 SW |
3063 | |
3064 | return ret; | |
3065 | } | |
3066 | ||
3067 | /* | |
3068 | * Common handling for vni route tables uninstall/selection. | |
3069 | */ | |
3070 | static int uninstall_evpn_route_entry_in_vni_common( | |
3071 | struct bgp *bgp, struct bgpevpn *vpn, const struct prefix_evpn *p, | |
3072 | struct bgp_dest *dest, struct bgp_path_info *parent_pi) | |
3073 | { | |
3074 | struct bgp_path_info *pi; | |
3075 | struct bgp_path_info *local_pi; | |
3076 | int ret; | |
3077 | ||
3078 | /* Find matching route entry. */ | |
3079 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
3080 | if (pi->extra && | |
3081 | (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
3082 | break; | |
3083 | ||
3084 | if (!pi) | |
3085 | return 0; | |
3086 | ||
3087 | bgp_evpn_remote_ip_hash_del(vpn, pi); | |
3088 | ||
3089 | /* Mark entry for deletion */ | |
3090 | bgp_path_info_delete(dest, pi); | |
3091 | ||
3092 | /* Perform route selection and update zebra, if required. */ | |
3093 | ret = evpn_route_select_install(bgp, vpn, dest); | |
3094 | ||
3095 | /* if the best path is a local path with a non-zero ES | |
3096 | * sync info against the local path may need to be updated | |
3097 | * when a remote path is deleted | |
3098 | */ | |
3099 | local_pi = bgp_evpn_route_get_local_path(bgp, dest); | |
3100 | if (local_pi && bgp_evpn_attr_is_local_es(local_pi->attr)) | |
3101 | bgp_evpn_update_type2_route_entry(bgp, vpn, dest, local_pi, | |
3102 | __func__); | |
3103 | ||
3104 | return ret; | |
3105 | } | |
3106 | ||
3107 | /* | |
3108 | * Install route entry into VNI IP table and invoke route selection. | |
3109 | */ | |
3110 | static int install_evpn_route_entry_in_vni_ip(struct bgp *bgp, | |
3111 | struct bgpevpn *vpn, | |
3112 | const struct prefix_evpn *p, | |
3113 | struct bgp_path_info *parent_pi) | |
3114 | { | |
3115 | int ret; | |
3116 | struct bgp_dest *dest; | |
3117 | ||
3118 | /* Ignore MAC Only Type-2 */ | |
3119 | if ((p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) && | |
3120 | (is_evpn_prefix_ipaddr_none(p) == true)) | |
3121 | return 0; | |
3122 | ||
3123 | /* Create (or fetch) route within the VNI IP table. */ | |
3124 | dest = bgp_evpn_vni_ip_node_get(vpn->ip_table, p, parent_pi); | |
3125 | ||
3126 | ret = install_evpn_route_entry_in_vni_common(bgp, vpn, p, dest, | |
3127 | parent_pi); | |
3128 | ||
3129 | bgp_dest_unlock_node(dest); | |
3130 | ||
3131 | return ret; | |
3132 | } | |
3133 | ||
3134 | /* | |
3135 | * Install route entry into VNI MAC table and invoke route selection. | |
3136 | */ | |
3137 | static int install_evpn_route_entry_in_vni_mac(struct bgp *bgp, | |
3138 | struct bgpevpn *vpn, | |
3139 | const struct prefix_evpn *p, | |
3140 | struct bgp_path_info *parent_pi) | |
3141 | { | |
3142 | int ret; | |
3143 | struct bgp_dest *dest; | |
3144 | ||
3145 | /* Only type-2 routes go into this table */ | |
3146 | if (p->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3147 | return 0; | |
3148 | ||
3149 | /* Create (or fetch) route within the VNI MAC table. */ | |
3150 | dest = bgp_evpn_vni_mac_node_get(vpn->mac_table, p, parent_pi); | |
3151 | ||
3152 | ret = install_evpn_route_entry_in_vni_common(bgp, vpn, p, dest, | |
3153 | parent_pi); | |
3154 | ||
3155 | bgp_dest_unlock_node(dest); | |
3156 | ||
3157 | return ret; | |
3158 | } | |
3159 | ||
3160 | /* | |
3161 | * Uninstall route entry from VNI IP table and invoke route selection. | |
3162 | */ | |
3163 | static int uninstall_evpn_route_entry_in_vni_ip(struct bgp *bgp, | |
3164 | struct bgpevpn *vpn, | |
3165 | const struct prefix_evpn *p, | |
3166 | struct bgp_path_info *parent_pi) | |
3167 | { | |
3168 | int ret; | |
3169 | struct bgp_dest *dest; | |
3170 | ||
3171 | /* Ignore MAC Only Type-2 */ | |
3172 | if ((p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) && | |
3173 | (is_evpn_prefix_ipaddr_none(p) == true)) | |
3174 | return 0; | |
3175 | ||
3176 | /* Locate route within the VNI IP table. */ | |
3177 | dest = bgp_evpn_vni_ip_node_lookup(vpn->ip_table, p, parent_pi); | |
3178 | if (!dest) | |
3179 | return 0; | |
3180 | ||
3181 | ret = uninstall_evpn_route_entry_in_vni_common(bgp, vpn, p, dest, | |
3182 | parent_pi); | |
3183 | ||
9bcb3eef | 3184 | bgp_dest_unlock_node(dest); |
a97a1e11 | 3185 | |
50f74cf1 | 3186 | return ret; |
3187 | } | |
3188 | ||
852d9f97 SW |
3189 | /* |
3190 | * Uninstall route entry from VNI IP table and invoke route selection. | |
3191 | */ | |
3192 | static int | |
3193 | uninstall_evpn_route_entry_in_vni_mac(struct bgp *bgp, struct bgpevpn *vpn, | |
3194 | const struct prefix_evpn *p, | |
3195 | struct bgp_path_info *parent_pi) | |
3196 | { | |
3197 | int ret; | |
3198 | struct bgp_dest *dest; | |
3199 | ||
3200 | /* Only type-2 routes go into this table */ | |
3201 | if (p->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE) | |
3202 | return 0; | |
3203 | ||
3204 | /* Locate route within the VNI MAC table. */ | |
3205 | dest = bgp_evpn_vni_mac_node_lookup(vpn->mac_table, p, parent_pi); | |
3206 | if (!dest) | |
3207 | return 0; | |
3208 | ||
3209 | ret = uninstall_evpn_route_entry_in_vni_common(bgp, vpn, p, dest, | |
3210 | parent_pi); | |
3211 | ||
3212 | bgp_dest_unlock_node(dest); | |
3213 | ||
3214 | return ret; | |
3215 | } | |
d3135ba3 | 3216 | /* |
3217 | * Uninstall route entry from the VRF routing table and send message | |
3218 | * to zebra, if appropriate. | |
3219 | */ | |
3220 | static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf, | |
bd494ec5 | 3221 | const struct prefix_evpn *evp, |
40381db7 | 3222 | struct bgp_path_info *parent_pi) |
d3135ba3 | 3223 | { |
9bcb3eef | 3224 | struct bgp_dest *dest; |
40381db7 | 3225 | struct bgp_path_info *pi; |
c4edf708 | 3226 | int ret = 0; |
d3135ba3 | 3227 | struct prefix p; |
3228 | struct prefix *pp = &p; | |
3229 | afi_t afi = 0; | |
3230 | safi_t safi = 0; | |
3231 | ||
3232 | memset(pp, 0, sizeof(struct prefix)); | |
3714a385 | 3233 | ip_prefix_from_evpn_prefix(evp, pp); |
d3135ba3 | 3234 | |
2dbe669b | 3235 | if (bgp_debug_zebra(NULL)) |
996c9314 | 3236 | zlog_debug( |
2dbe669b DA |
3237 | "vrf %s: unimport evpn prefix %pFX parent %p flags 0x%x", |
3238 | vrf_id_to_name(bgp_vrf->vrf_id), evp, parent_pi, | |
3239 | parent_pi->flags); | |
1eb88002 | 3240 | |
d3135ba3 | 3241 | /* Locate route within the VRF. */ |
3242 | /* NOTE: There is no RD here. */ | |
3714a385 | 3243 | if (is_evpn_prefix_ipaddr_v4(evp)) { |
d3135ba3 | 3244 | afi = AFI_IP; |
3245 | safi = SAFI_UNICAST; | |
9bcb3eef | 3246 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 3247 | } else { |
3248 | afi = AFI_IP6; | |
3249 | safi = SAFI_UNICAST; | |
9bcb3eef | 3250 | dest = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp); |
d3135ba3 | 3251 | } |
3252 | ||
9bcb3eef | 3253 | if (!dest) |
d3135ba3 | 3254 | return 0; |
3255 | ||
3256 | /* Find matching route entry. */ | |
9bcb3eef | 3257 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
40381db7 DS |
3258 | if (pi->extra |
3259 | && (struct bgp_path_info *)pi->extra->parent == parent_pi) | |
d3135ba3 | 3260 | break; |
3261 | ||
e71ad4b6 DA |
3262 | if (!pi) { |
3263 | bgp_dest_unlock_node(dest); | |
d3135ba3 | 3264 | return 0; |
e71ad4b6 | 3265 | } |
d3135ba3 | 3266 | |
5f0c5ec8 | 3267 | if (bgp_debug_zebra(NULL)) |
c10e14e9 DS |
3268 | zlog_debug("... delete dest %p (l %d) pi %p (l %d, f 0x%x)", |
3269 | dest, bgp_dest_get_lock_count(dest), pi, pi->lock, | |
3270 | pi->flags); | |
5f0c5ec8 | 3271 | |
7452e879 | 3272 | /* Process for route leaking. */ |
3273 | vpn_leak_from_vrf_withdraw(bgp_get_default(), bgp_vrf, pi); | |
3274 | ||
9bcb3eef | 3275 | bgp_aggregate_decrement(bgp_vrf, bgp_dest_get_prefix(dest), pi, afi, |
b54892e0 | 3276 | safi); |
4c7a11d5 | 3277 | |
d3135ba3 | 3278 | /* Mark entry for deletion */ |
9bcb3eef | 3279 | bgp_path_info_delete(dest, pi); |
d3135ba3 | 3280 | |
090efa2f AK |
3281 | /* Unlink path to evpn nexthop */ |
3282 | bgp_evpn_path_nh_del(bgp_vrf, pi); | |
3283 | ||
d3135ba3 | 3284 | /* Perform route selection and update zebra, if required. */ |
9bcb3eef | 3285 | bgp_process(bgp_vrf, dest, afi, safi); |
d3135ba3 | 3286 | |
3287 | /* Unlock route node. */ | |
9bcb3eef | 3288 | bgp_dest_unlock_node(dest); |
d3135ba3 | 3289 | |
3290 | return ret; | |
3291 | } | |
3292 | ||
128ea8ab | 3293 | /* |
852d9f97 SW |
3294 | * Install route entry into the VNI routing tables. |
3295 | */ | |
3296 | static int install_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, | |
3297 | const struct prefix_evpn *p, | |
3298 | struct bgp_path_info *parent_pi) | |
3299 | { | |
3300 | int ret = 0; | |
3301 | ||
3302 | if (bgp_debug_update(parent_pi->peer, NULL, NULL, 1)) | |
3303 | zlog_debug( | |
3304 | "%s (%u): Installing EVPN %pFX route in VNI %u IP/MAC table", | |
3305 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
3306 | ||
3307 | ret = install_evpn_route_entry_in_vni_mac(bgp, vpn, p, parent_pi); | |
3308 | ||
3309 | if (ret) { | |
3310 | flog_err( | |
3311 | EC_BGP_EVPN_FAIL, | |
3312 | "%s (%u): Failed to install EVPN %pFX route in VNI %u MAC table", | |
3313 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
3314 | ||
3315 | return ret; | |
3316 | } | |
3317 | ||
3318 | ret = install_evpn_route_entry_in_vni_ip(bgp, vpn, p, parent_pi); | |
3319 | ||
3320 | if (ret) { | |
3321 | flog_err( | |
3322 | EC_BGP_EVPN_FAIL, | |
3323 | "%s (%u): Failed to install EVPN %pFX route in VNI %u IP table", | |
3324 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
3325 | ||
3326 | return ret; | |
3327 | } | |
3328 | ||
3329 | return ret; | |
3330 | } | |
3331 | ||
3332 | /* | |
3333 | * Uninstall route entry from the VNI routing tables. | |
128ea8ab | 3334 | */ |
d62a17ae | 3335 | static int uninstall_evpn_route_entry(struct bgp *bgp, struct bgpevpn *vpn, |
bd494ec5 | 3336 | const struct prefix_evpn *p, |
40381db7 | 3337 | struct bgp_path_info *parent_pi) |
128ea8ab | 3338 | { |
852d9f97 | 3339 | int ret = 0; |
c44ab6f1 | 3340 | |
852d9f97 SW |
3341 | if (bgp_debug_update(parent_pi->peer, NULL, NULL, 1)) |
3342 | zlog_debug( | |
3343 | "%s (%u): Uninstalling EVPN %pFX route from VNI %u IP/MAC table", | |
3344 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
128ea8ab | 3345 | |
852d9f97 | 3346 | ret = uninstall_evpn_route_entry_in_vni_ip(bgp, vpn, p, parent_pi); |
128ea8ab | 3347 | |
852d9f97 SW |
3348 | if (ret) { |
3349 | flog_err( | |
3350 | EC_BGP_EVPN_FAIL, | |
3351 | "%s (%u): Failed to uninstall EVPN %pFX route from VNI %u IP table", | |
3352 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
128ea8ab | 3353 | |
852d9f97 | 3354 | return ret; |
e71ad4b6 | 3355 | } |
128ea8ab | 3356 | |
852d9f97 | 3357 | ret = uninstall_evpn_route_entry_in_vni_mac(bgp, vpn, p, parent_pi); |
128ea8ab | 3358 | |
852d9f97 SW |
3359 | if (ret) { |
3360 | flog_err( | |
3361 | EC_BGP_EVPN_FAIL, | |
3362 | "%s (%u): Failed to uninstall EVPN %pFX route from VNI %u MAC table", | |
3363 | vrf_id_to_name(bgp->vrf_id), bgp->vrf_id, p, vpn->vni); | |
9c7edc03 | 3364 | |
852d9f97 SW |
3365 | return ret; |
3366 | } | |
128ea8ab | 3367 | |
d62a17ae | 3368 | return ret; |
128ea8ab | 3369 | } |
3370 | ||
5ba238b7 MK |
3371 | /* |
3372 | * Given a route entry and a VRF, see if this route entry should be | |
3373 | * imported into the VRF i.e., RTs match. | |
3374 | */ | |
4b7e6066 | 3375 | static int is_route_matching_for_vrf(struct bgp *bgp_vrf, |
40381db7 | 3376 | struct bgp_path_info *pi) |
5ba238b7 | 3377 | { |
40381db7 | 3378 | struct attr *attr = pi->attr; |
5ba238b7 | 3379 | struct ecommunity *ecom; |
f6e07e1b | 3380 | uint32_t i; |
5ba238b7 MK |
3381 | |
3382 | assert(attr); | |
3383 | /* Route should have valid RT to be even considered. */ | |
3384 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3385 | return 0; | |
3386 | ||
b53e67a3 | 3387 | ecom = bgp_attr_get_ecommunity(attr); |
5ba238b7 MK |
3388 | if (!ecom || !ecom->size) |
3389 | return 0; | |
3390 | ||
3391 | /* For each extended community RT, see if it matches this VNI. If any RT | |
3392 | * matches, we're done. | |
3393 | */ | |
3394 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
3395 | uint8_t *pnt; |
3396 | uint8_t type, sub_type; | |
5ba238b7 MK |
3397 | struct ecommunity_val *eval; |
3398 | struct ecommunity_val eval_tmp; | |
3399 | struct vrf_irt_node *irt; | |
3400 | ||
3401 | /* Only deal with RTs */ | |
34540b0d | 3402 | pnt = (ecom->val + (i * ecom->unit_size)); |
5ba238b7 | 3403 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 3404 | + (i * ecom->unit_size)); |
5ba238b7 MK |
3405 | type = *pnt++; |
3406 | sub_type = *pnt++; | |
3407 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3408 | continue; | |
3409 | ||
3410 | /* See if this RT matches specified VNIs import RTs */ | |
3411 | irt = lookup_vrf_import_rt(eval); | |
5d9cbca2 | 3412 | if (irt) |
5ba238b7 MK |
3413 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
3414 | return 1; | |
3415 | ||
3416 | /* Also check for non-exact match. In this, we mask out the AS | |
3417 | * and | |
3418 | * only check on the local-admin sub-field. This is to | |
3419 | * facilitate using | |
3420 | * VNI as the RT for EBGP peering too. | |
3421 | */ | |
3422 | irt = NULL; | |
3423 | if (type == ECOMMUNITY_ENCODE_AS | |
3424 | || type == ECOMMUNITY_ENCODE_AS4 | |
3425 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 3426 | memcpy(&eval_tmp, eval, ecom->unit_size); |
5ba238b7 MK |
3427 | mask_ecom_global_admin(&eval_tmp, eval); |
3428 | irt = lookup_vrf_import_rt(&eval_tmp); | |
3429 | } | |
5d9cbca2 | 3430 | if (irt) |
5ba238b7 MK |
3431 | if (is_vrf_present_in_irt_vrfs(irt->vrfs, bgp_vrf)) |
3432 | return 1; | |
3433 | } | |
3434 | ||
3435 | return 0; | |
3436 | } | |
3437 | ||
128ea8ab | 3438 | /* |
3439 | * Given a route entry and a VNI, see if this route entry should be | |
3440 | * imported into the VNI i.e., RTs match. | |
3441 | */ | |
d62a17ae | 3442 | static int is_route_matching_for_vni(struct bgp *bgp, struct bgpevpn *vpn, |
40381db7 | 3443 | struct bgp_path_info *pi) |
d62a17ae | 3444 | { |
40381db7 | 3445 | struct attr *attr = pi->attr; |
d62a17ae | 3446 | struct ecommunity *ecom; |
f6e07e1b | 3447 | uint32_t i; |
d62a17ae | 3448 | |
3449 | assert(attr); | |
3450 | /* Route should have valid RT to be even considered. */ | |
3451 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3452 | return 0; | |
3453 | ||
b53e67a3 | 3454 | ecom = bgp_attr_get_ecommunity(attr); |
d62a17ae | 3455 | if (!ecom || !ecom->size) |
3456 | return 0; | |
3457 | ||
3458 | /* For each extended community RT, see if it matches this VNI. If any RT | |
3459 | * matches, we're done. | |
3460 | */ | |
3461 | for (i = 0; i < ecom->size; i++) { | |
d7c0a89a QY |
3462 | uint8_t *pnt; |
3463 | uint8_t type, sub_type; | |
d62a17ae | 3464 | struct ecommunity_val *eval; |
3465 | struct ecommunity_val eval_tmp; | |
3466 | struct irt_node *irt; | |
3467 | ||
3468 | /* Only deal with RTs */ | |
34540b0d | 3469 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 3470 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 3471 | + (i * ecom->unit_size)); |
d62a17ae | 3472 | type = *pnt++; |
3473 | sub_type = *pnt++; | |
3474 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3475 | continue; | |
3476 | ||
3477 | /* See if this RT matches specified VNIs import RTs */ | |
3478 | irt = lookup_import_rt(bgp, eval); | |
b1ab0dfe | 3479 | if (irt) |
d62a17ae | 3480 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
3481 | return 1; | |
3482 | ||
3483 | /* Also check for non-exact match. In this, we mask out the AS | |
3484 | * and | |
3485 | * only check on the local-admin sub-field. This is to | |
3486 | * facilitate using | |
3487 | * VNI as the RT for EBGP peering too. | |
3488 | */ | |
3489 | irt = NULL; | |
3490 | if (type == ECOMMUNITY_ENCODE_AS | |
3491 | || type == ECOMMUNITY_ENCODE_AS4 | |
3492 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 3493 | memcpy(&eval_tmp, eval, ecom->unit_size); |
d62a17ae | 3494 | mask_ecom_global_admin(&eval_tmp, eval); |
3495 | irt = lookup_import_rt(bgp, &eval_tmp); | |
3496 | } | |
b1ab0dfe | 3497 | if (irt) |
d62a17ae | 3498 | if (is_vni_present_in_irt_vnis(irt->vnis, vpn)) |
3499 | return 1; | |
3500 | } | |
3501 | ||
3502 | return 0; | |
128ea8ab | 3503 | } |
3504 | ||
47bf0432 CS |
3505 | /* This API will scan evpn routes for checking attribute's rmac |
3506 | * macthes with bgp instance router mac. It avoid installing | |
3507 | * route into bgp vrf table and remote rmac in bridge table. | |
3508 | */ | |
3509 | static int bgp_evpn_route_rmac_self_check(struct bgp *bgp_vrf, | |
bd494ec5 | 3510 | const struct prefix_evpn *evp, |
47bf0432 CS |
3511 | struct bgp_path_info *pi) |
3512 | { | |
3513 | /* evpn route could have learnt prior to L3vni has come up, | |
3514 | * perform rmac check before installing route and | |
3515 | * remote router mac. | |
3516 | * The route will be removed from global bgp table once | |
3517 | * SVI comes up with MAC and stored in hash, triggers | |
3518 | * bgp_mac_rescan_all_evpn_tables. | |
3519 | */ | |
05864da7 | 3520 | if (memcmp(&bgp_vrf->rmac, &pi->attr->rmac, ETH_ALEN) == 0) { |
47bf0432 | 3521 | if (bgp_debug_update(pi->peer, NULL, NULL, 1)) { |
47bf0432 CS |
3522 | char attr_str[BUFSIZ] = {0}; |
3523 | ||
5022c833 | 3524 | bgp_dump_attr(pi->attr, attr_str, sizeof(attr_str)); |
47bf0432 | 3525 | |
2dbe669b DA |
3526 | zlog_debug( |
3527 | "%s: bgp %u prefix %pFX with attr %s - DENIED due to self mac", | |
3528 | __func__, bgp_vrf->vrf_id, evp, attr_str); | |
47bf0432 CS |
3529 | } |
3530 | ||
3531 | return 1; | |
3532 | } | |
3533 | ||
3534 | return 0; | |
3535 | } | |
3536 | ||
bbc57c6c AK |
3537 | /* don't import hosts that are locally attached */ |
3538 | static inline bool | |
36dd4574 AK |
3539 | bgp_evpn_skip_vrf_import_of_local_es(struct bgp *bgp_vrf, |
3540 | const struct prefix_evpn *evp, | |
bbc57c6c AK |
3541 | struct bgp_path_info *pi, int install) |
3542 | { | |
26c03e43 | 3543 | esi_t *esi; |
bbc57c6c | 3544 | |
26c03e43 AK |
3545 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { |
3546 | esi = bgp_evpn_attr_get_esi(pi->attr); | |
3547 | ||
3548 | /* Don't import routes that point to a local destination */ | |
3549 | if (bgp_evpn_attr_is_local_es(pi->attr)) { | |
3550 | if (BGP_DEBUG(evpn_mh, EVPN_MH_RT)) { | |
3551 | char esi_buf[ESI_STR_LEN]; | |
3552 | ||
3553 | zlog_debug( | |
3554 | "vrf %s of evpn prefix %pFX skipped, local es %s", | |
3555 | install ? "import" : "unimport", evp, | |
3556 | esi_to_str(esi, esi_buf, | |
3557 | sizeof(esi_buf))); | |
3558 | } | |
3559 | return true; | |
3560 | } | |
58bff4d1 AK |
3561 | } |
3562 | return false; | |
3563 | } | |
26c03e43 | 3564 | |
58bff4d1 AK |
3565 | /* |
3566 | * Install or uninstall a mac-ip route in the provided vrf if | |
3567 | * there is a rt match | |
3568 | */ | |
3569 | int bgp_evpn_route_entry_install_if_vrf_match(struct bgp *bgp_vrf, | |
3570 | struct bgp_path_info *pi, | |
3571 | int install) | |
3572 | { | |
3573 | int ret = 0; | |
3574 | const struct prefix_evpn *evp = | |
3575 | (const struct prefix_evpn *)bgp_dest_get_prefix(pi->net); | |
3576 | ||
3577 | /* Consider "valid" remote routes applicable for | |
3578 | * this VRF. | |
3579 | */ | |
3580 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) | |
3581 | && pi->type == ZEBRA_ROUTE_BGP | |
3582 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
3583 | return 0; | |
3584 | ||
58bff4d1 AK |
3585 | if (is_route_matching_for_vrf(bgp_vrf, pi)) { |
3586 | if (bgp_evpn_route_rmac_self_check(bgp_vrf, evp, pi)) | |
3587 | return 0; | |
3588 | ||
74efb822 | 3589 | /* don't import hosts that are locally attached */ |
e57e63eb | 3590 | if (install && bgp_evpn_skip_vrf_import_of_local_es( |
3591 | bgp_vrf, evp, pi, install)) | |
3592 | return 0; | |
3593 | ||
3594 | if (install) | |
58bff4d1 | 3595 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
26c03e43 | 3596 | else |
58bff4d1 AK |
3597 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
3598 | pi); | |
26c03e43 | 3599 | |
58bff4d1 AK |
3600 | if (ret) |
3601 | flog_err(EC_BGP_EVPN_FAIL, | |
3602 | "Failed to %s EVPN %pFX route in VRF %s", | |
3603 | install ? "install" : "uninstall", evp, | |
3604 | vrf_id_to_name(bgp_vrf->vrf_id)); | |
bbc57c6c | 3605 | } |
58bff4d1 AK |
3606 | |
3607 | return ret; | |
bbc57c6c AK |
3608 | } |
3609 | ||
5ba238b7 MK |
3610 | /* |
3611 | * Install or uninstall mac-ip routes are appropriate for this | |
3612 | * particular VRF. | |
3613 | */ | |
996c9314 | 3614 | static int install_uninstall_routes_for_vrf(struct bgp *bgp_vrf, int install) |
5ba238b7 MK |
3615 | { |
3616 | afi_t afi; | |
3617 | safi_t safi; | |
9bcb3eef | 3618 | struct bgp_dest *rd_dest, *dest; |
5ba238b7 | 3619 | struct bgp_table *table; |
40381db7 | 3620 | struct bgp_path_info *pi; |
5ba238b7 | 3621 | int ret; |
5e53dce3 | 3622 | struct bgp *bgp_evpn = NULL; |
5ba238b7 MK |
3623 | |
3624 | afi = AFI_L2VPN; | |
3625 | safi = SAFI_EVPN; | |
5e53dce3 T |
3626 | bgp_evpn = bgp_get_evpn(); |
3627 | if (!bgp_evpn) | |
5ba238b7 MK |
3628 | return -1; |
3629 | ||
3630 | /* Walk entire global routing table and evaluate routes which could be | |
3631 | * imported into this VRF. Note that we need to loop through all global | |
3632 | * routes to determine which route matches the import rt on vrf | |
3633 | */ | |
9bcb3eef DS |
3634 | for (rd_dest = bgp_table_top(bgp_evpn->rib[afi][safi]); rd_dest; |
3635 | rd_dest = bgp_route_next(rd_dest)) { | |
3636 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
5ba238b7 MK |
3637 | if (!table) |
3638 | continue; | |
3639 | ||
9bcb3eef DS |
3640 | for (dest = bgp_table_top(table); dest; |
3641 | dest = bgp_route_next(dest)) { | |
3642 | const struct prefix_evpn *evp = | |
3643 | (const struct prefix_evpn *)bgp_dest_get_prefix( | |
3644 | dest); | |
5ba238b7 | 3645 | |
1eb88002 | 3646 | /* if not mac-ip route skip this route */ |
996c9314 LB |
3647 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3648 | || evp->prefix.route_type | |
3649 | == BGP_EVPN_IP_PREFIX_ROUTE)) | |
5ba238b7 MK |
3650 | continue; |
3651 | ||
1eb88002 | 3652 | /* if not a mac+ip route skip this route */ |
3714a385 | 3653 | if (!(is_evpn_prefix_ipaddr_v4(evp) |
3654 | || is_evpn_prefix_ipaddr_v6(evp))) | |
1eb88002 MK |
3655 | continue; |
3656 | ||
9bcb3eef | 3657 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3658 | pi = pi->next) { |
58bff4d1 AK |
3659 | ret = bgp_evpn_route_entry_install_if_vrf_match( |
3660 | bgp_vrf, pi, install); | |
3661 | if (ret) | |
3662 | return ret; | |
5ba238b7 MK |
3663 | } |
3664 | } | |
3665 | } | |
3666 | ||
3667 | return 0; | |
3668 | } | |
3669 | ||
128ea8ab | 3670 | /* |
3671 | * Install or uninstall routes of specified type that are appropriate for this | |
3672 | * particular VNI. | |
3673 | */ | |
d62a17ae | 3674 | static int install_uninstall_routes_for_vni(struct bgp *bgp, |
3675 | struct bgpevpn *vpn, | |
3676 | bgp_evpn_route_type rtype, | |
3677 | int install) | |
3678 | { | |
0291c246 MK |
3679 | afi_t afi; |
3680 | safi_t safi; | |
9bcb3eef | 3681 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 3682 | struct bgp_table *table; |
40381db7 | 3683 | struct bgp_path_info *pi; |
0291c246 | 3684 | int ret; |
d62a17ae | 3685 | |
3686 | afi = AFI_L2VPN; | |
3687 | safi = SAFI_EVPN; | |
3688 | ||
3689 | /* Walk entire global routing table and evaluate routes which could be | |
3690 | * imported into this VPN. Note that we cannot just look at the routes | |
3691 | * for | |
3692 | * the VNI's RD - remote routes applicable for this VNI could have any | |
3693 | * RD. | |
3694 | */ | |
3695 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
3696 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
3697 | rd_dest = bgp_route_next(rd_dest)) { | |
3698 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
d62a17ae | 3699 | if (!table) |
3700 | continue; | |
3701 | ||
9bcb3eef DS |
3702 | for (dest = bgp_table_top(table); dest; |
3703 | dest = bgp_route_next(dest)) { | |
b54892e0 | 3704 | const struct prefix_evpn *evp = |
9bcb3eef DS |
3705 | (const struct prefix_evpn *)bgp_dest_get_prefix( |
3706 | dest); | |
d62a17ae | 3707 | |
3708 | if (evp->prefix.route_type != rtype) | |
3709 | continue; | |
3710 | ||
9bcb3eef | 3711 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 3712 | pi = pi->next) { |
d62a17ae | 3713 | /* Consider "valid" remote routes applicable for |
3714 | * this VNI. */ | |
40381db7 DS |
3715 | if (!(CHECK_FLAG(pi->flags, BGP_PATH_VALID) |
3716 | && pi->type == ZEBRA_ROUTE_BGP | |
3717 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
d62a17ae | 3718 | continue; |
3719 | ||
40381db7 | 3720 | if (is_route_matching_for_vni(bgp, vpn, pi)) { |
d62a17ae | 3721 | if (install) |
3722 | ret = install_evpn_route_entry( | |
40381db7 | 3723 | bgp, vpn, evp, pi); |
d62a17ae | 3724 | else |
3725 | ret = uninstall_evpn_route_entry( | |
40381db7 | 3726 | bgp, vpn, evp, pi); |
d62a17ae | 3727 | |
3728 | if (ret) { | |
af4c2728 | 3729 | flog_err( |
e50f7cfd | 3730 | EC_BGP_EVPN_FAIL, |
d62a17ae | 3731 | "%u: Failed to %s EVPN %s route in VNI %u", |
3732 | bgp->vrf_id, | |
3733 | install ? "install" | |
3734 | : "uninstall", | |
3735 | rtype == BGP_EVPN_MAC_IP_ROUTE | |
3736 | ? "MACIP" | |
3737 | : "IMET", | |
3738 | vpn->vni); | |
dc52bece DS |
3739 | |
3740 | bgp_dest_unlock_node(rd_dest); | |
3741 | bgp_dest_unlock_node(dest); | |
d62a17ae | 3742 | return ret; |
3743 | } | |
3744 | } | |
3745 | } | |
3746 | } | |
3747 | } | |
3748 | ||
3749 | return 0; | |
128ea8ab | 3750 | } |
3751 | ||
5ba238b7 | 3752 | /* Install any existing remote routes applicable for this VRF into VRF RIB. This |
523cafc4 | 3753 | * is invoked upon l3vni-add or l3vni import rt change |
3754 | */ | |
5ba238b7 MK |
3755 | static int install_routes_for_vrf(struct bgp *bgp_vrf) |
3756 | { | |
3757 | install_uninstall_routes_for_vrf(bgp_vrf, 1); | |
3758 | return 0; | |
3759 | } | |
3760 | ||
128ea8ab | 3761 | /* |
3762 | * Install any existing remote routes applicable for this VNI into its | |
3763 | * routing table. This is invoked when a VNI becomes "live" or its Import | |
3764 | * RT is changed. | |
3765 | */ | |
d62a17ae | 3766 | static int install_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 3767 | { |
d62a17ae | 3768 | int ret; |
128ea8ab | 3769 | |
d62a17ae | 3770 | /* Install type-3 routes followed by type-2 routes - the ones applicable |
3771 | * for this VNI. | |
3772 | */ | |
3773 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, | |
3774 | 1); | |
3775 | if (ret) | |
3776 | return ret; | |
128ea8ab | 3777 | |
c44ab6f1 AK |
3778 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
3779 | 1); | |
3780 | if (ret) | |
3781 | return ret; | |
3782 | ||
d62a17ae | 3783 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, |
3784 | 1); | |
128ea8ab | 3785 | } |
3786 | ||
5ba238b7 MK |
3787 | /* uninstall routes from l3vni vrf. */ |
3788 | static int uninstall_routes_for_vrf(struct bgp *bgp_vrf) | |
3789 | { | |
3790 | install_uninstall_routes_for_vrf(bgp_vrf, 0); | |
3791 | return 0; | |
3792 | } | |
3793 | ||
90e60aa7 | 3794 | /* |
3795 | * Uninstall any existing remote routes for this VNI. One scenario in which | |
3796 | * this is invoked is upon an import RT change. | |
3797 | */ | |
d62a17ae | 3798 | static int uninstall_routes_for_vni(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 3799 | { |
d62a17ae | 3800 | int ret; |
90e60aa7 | 3801 | |
d62a17ae | 3802 | /* Uninstall type-2 routes followed by type-3 routes - the ones |
3803 | * applicable | |
3804 | * for this VNI. | |
3805 | */ | |
3806 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_MAC_IP_ROUTE, | |
3807 | 0); | |
3808 | if (ret) | |
3809 | return ret; | |
90e60aa7 | 3810 | |
c44ab6f1 | 3811 | ret = install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_AD_ROUTE, |
9c49ac74 | 3812 | 0); |
c44ab6f1 AK |
3813 | if (ret) |
3814 | return ret; | |
3815 | ||
3816 | ||
d62a17ae | 3817 | return install_uninstall_routes_for_vni(bgp, vpn, BGP_EVPN_IMET_ROUTE, |
3818 | 0); | |
90e60aa7 | 3819 | } |
3820 | ||
d3135ba3 | 3821 | /* |
3822 | * Install or uninstall route in matching VRFs (list). | |
3823 | */ | |
3824 | static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi, | |
3825 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3826 | struct bgp_path_info *pi, |
d3135ba3 | 3827 | struct list *vrfs, int install) |
3828 | { | |
d3135ba3 | 3829 | struct bgp *bgp_vrf; |
3830 | struct listnode *node, *nnode; | |
3831 | ||
90264d64 | 3832 | /* Only type-2/type-5 routes go into a VRF */ |
996c9314 LB |
3833 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
3834 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
d3135ba3 | 3835 | return 0; |
3836 | ||
90264d64 | 3837 | /* if it is type-2 route and not a mac+ip route skip this route */ |
996c9314 | 3838 | if ((evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) |
3714a385 | 3839 | && !(is_evpn_prefix_ipaddr_v4(evp) |
3840 | || is_evpn_prefix_ipaddr_v6(evp))) | |
30a30f57 MK |
3841 | return 0; |
3842 | ||
d3135ba3 | 3843 | for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) { |
3844 | int ret; | |
3845 | ||
36dd4574 | 3846 | /* don't import hosts that are locally attached */ |
e57e63eb | 3847 | if (install && bgp_evpn_skip_vrf_import_of_local_es( |
3848 | bgp_vrf, evp, pi, install)) | |
3849 | return 0; | |
3850 | ||
3851 | if (install) | |
40381db7 | 3852 | ret = install_evpn_route_entry_in_vrf(bgp_vrf, evp, pi); |
d3135ba3 | 3853 | else |
996c9314 | 3854 | ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf, evp, |
40381db7 | 3855 | pi); |
d3135ba3 | 3856 | |
3857 | if (ret) { | |
e50f7cfd | 3858 | flog_err(EC_BGP_EVPN_FAIL, |
2dbe669b | 3859 | "%u: Failed to %s prefix %pFX in VRF %s", |
1c50c1c0 | 3860 | bgp_def->vrf_id, |
2dbe669b | 3861 | install ? "install" : "uninstall", evp, |
1c50c1c0 | 3862 | vrf_id_to_name(bgp_vrf->vrf_id)); |
d3135ba3 | 3863 | return ret; |
3864 | } | |
3865 | } | |
3866 | ||
3867 | return 0; | |
3868 | } | |
3869 | ||
128ea8ab | 3870 | /* |
3871 | * Install or uninstall route in matching VNIs (list). | |
3872 | */ | |
d62a17ae | 3873 | static int install_uninstall_route_in_vnis(struct bgp *bgp, afi_t afi, |
3874 | safi_t safi, struct prefix_evpn *evp, | |
40381db7 | 3875 | struct bgp_path_info *pi, |
d62a17ae | 3876 | struct list *vnis, int install) |
128ea8ab | 3877 | { |
d62a17ae | 3878 | struct bgpevpn *vpn; |
3879 | struct listnode *node, *nnode; | |
128ea8ab | 3880 | |
d62a17ae | 3881 | for (ALL_LIST_ELEMENTS(vnis, node, nnode, vpn)) { |
3882 | int ret; | |
128ea8ab | 3883 | |
d62a17ae | 3884 | if (!is_vni_live(vpn)) |
3885 | continue; | |
128ea8ab | 3886 | |
d62a17ae | 3887 | if (install) |
40381db7 | 3888 | ret = install_evpn_route_entry(bgp, vpn, evp, pi); |
d62a17ae | 3889 | else |
40381db7 | 3890 | ret = uninstall_evpn_route_entry(bgp, vpn, evp, pi); |
128ea8ab | 3891 | |
d62a17ae | 3892 | if (ret) { |
1c50c1c0 QY |
3893 | flog_err(EC_BGP_EVPN_FAIL, |
3894 | "%u: Failed to %s EVPN %s route in VNI %u", | |
3895 | bgp->vrf_id, install ? "install" : "uninstall", | |
3896 | evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
3897 | ? "MACIP" | |
3898 | : "IMET", | |
3899 | vpn->vni); | |
d62a17ae | 3900 | return ret; |
3901 | } | |
3902 | } | |
128ea8ab | 3903 | |
d62a17ae | 3904 | return 0; |
128ea8ab | 3905 | } |
3906 | ||
3907 | /* | |
50f74cf1 | 3908 | * Install or uninstall route for appropriate VNIs/ESIs. |
128ea8ab | 3909 | */ |
26c03e43 AK |
3910 | static int bgp_evpn_install_uninstall_table(struct bgp *bgp, afi_t afi, |
3911 | safi_t safi, const struct prefix *p, | |
3912 | struct bgp_path_info *pi, | |
3913 | int import, bool in_vni_rt, | |
3914 | bool in_vrf_rt) | |
d62a17ae | 3915 | { |
3916 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
40381db7 | 3917 | struct attr *attr = pi->attr; |
d62a17ae | 3918 | struct ecommunity *ecom; |
f6e07e1b | 3919 | uint32_t i; |
c44ab6f1 | 3920 | struct prefix_evpn ad_evp; |
d62a17ae | 3921 | |
3922 | assert(attr); | |
3923 | ||
fff7545a | 3924 | /* Only type-1, type-2, type-3, type-4 and type-5 |
3925 | * are supported currently | |
3926 | */ | |
d62a17ae | 3927 | if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE |
90264d64 | 3928 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE |
50f74cf1 | 3929 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE |
c44ab6f1 | 3930 | || evp->prefix.route_type == BGP_EVPN_AD_ROUTE |
90264d64 | 3931 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) |
d62a17ae | 3932 | return 0; |
3933 | ||
3934 | /* If we don't have Route Target, nothing much to do. */ | |
3935 | if (!(attr->flag & ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES))) | |
3936 | return 0; | |
3937 | ||
c44ab6f1 AK |
3938 | /* EAD prefix in the global table doesn't include the VTEP-IP so |
3939 | * we need to create a different copy for the VNI | |
3940 | */ | |
3941 | if (evp->prefix.route_type == BGP_EVPN_AD_ROUTE) | |
852d9f97 SW |
3942 | evp = evpn_type1_prefix_vni_ip_copy(&ad_evp, evp, |
3943 | attr->nexthop); | |
c44ab6f1 | 3944 | |
b53e67a3 | 3945 | ecom = bgp_attr_get_ecommunity(attr); |
d62a17ae | 3946 | if (!ecom || !ecom->size) |
3947 | return -1; | |
3948 | ||
50f74cf1 | 3949 | /* An EVPN route belongs to a VNI or a VRF or an ESI based on the RTs |
3950 | * attached to the route */ | |
d62a17ae | 3951 | for (i = 0; i < ecom->size; i++) { |
d7c0a89a QY |
3952 | uint8_t *pnt; |
3953 | uint8_t type, sub_type; | |
d62a17ae | 3954 | struct ecommunity_val *eval; |
3955 | struct ecommunity_val eval_tmp; | |
996c9314 | 3956 | struct irt_node *irt; /* import rt for l2vni */ |
d3135ba3 | 3957 | struct vrf_irt_node *vrf_irt; /* import rt for l3vni */ |
c44ab6f1 | 3958 | struct bgp_evpn_es *es; |
d62a17ae | 3959 | |
3960 | /* Only deal with RTs */ | |
34540b0d | 3961 | pnt = (ecom->val + (i * ecom->unit_size)); |
d62a17ae | 3962 | eval = (struct ecommunity_val *)(ecom->val |
34540b0d | 3963 | + (i * ecom->unit_size)); |
d62a17ae | 3964 | type = *pnt++; |
3965 | sub_type = *pnt++; | |
3966 | if (sub_type != ECOMMUNITY_ROUTE_TARGET) | |
3967 | continue; | |
3968 | ||
58bff4d1 AK |
3969 | /* non-local MAC-IP routes in the global route table are linked |
3970 | * to the destination ES | |
3971 | */ | |
3972 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) | |
3973 | bgp_evpn_path_es_link(pi, 0, | |
3974 | bgp_evpn_attr_get_esi(pi->attr)); | |
3975 | ||
50f74cf1 | 3976 | /* |
3977 | * macip routes (type-2) are imported into VNI and VRF tables. | |
3978 | * IMET route is imported into VNI table. | |
3979 | * prefix routes are imported into VRF table. | |
523cafc4 | 3980 | */ |
50f74cf1 | 3981 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE || |
3982 | evp->prefix.route_type == BGP_EVPN_IMET_ROUTE || | |
c44ab6f1 | 3983 | evp->prefix.route_type == BGP_EVPN_AD_ROUTE || |
50f74cf1 | 3984 | evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE) { |
d62a17ae | 3985 | |
26c03e43 | 3986 | irt = in_vni_rt ? lookup_import_rt(bgp, eval) : NULL; |
50f74cf1 | 3987 | if (irt) |
40381db7 DS |
3988 | install_uninstall_route_in_vnis( |
3989 | bgp, afi, safi, evp, pi, irt->vnis, | |
3990 | import); | |
50f74cf1 | 3991 | |
26c03e43 | 3992 | vrf_irt = in_vrf_rt ? lookup_vrf_import_rt(eval) : NULL; |
50f74cf1 | 3993 | if (vrf_irt) |
40381db7 DS |
3994 | install_uninstall_route_in_vrfs( |
3995 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
3996 | import); | |
50f74cf1 | 3997 | |
3998 | /* Also check for non-exact match. | |
3999 | * In this, we mask out the AS and | |
4000 | * only check on the local-admin sub-field. | |
4001 | * This is to facilitate using | |
4002 | * VNI as the RT for EBGP peering too. | |
4003 | */ | |
4004 | irt = NULL; | |
4005 | vrf_irt = NULL; | |
4006 | if (type == ECOMMUNITY_ENCODE_AS | |
4007 | || type == ECOMMUNITY_ENCODE_AS4 | |
4008 | || type == ECOMMUNITY_ENCODE_IP) { | |
34540b0d | 4009 | memcpy(&eval_tmp, eval, ecom->unit_size); |
50f74cf1 | 4010 | mask_ecom_global_admin(&eval_tmp, eval); |
26c03e43 AK |
4011 | if (in_vni_rt) |
4012 | irt = lookup_import_rt(bgp, &eval_tmp); | |
4013 | if (in_vrf_rt) | |
4014 | vrf_irt = | |
4015 | lookup_vrf_import_rt(&eval_tmp); | |
50f74cf1 | 4016 | } |
4017 | ||
4018 | if (irt) | |
40381db7 DS |
4019 | install_uninstall_route_in_vnis( |
4020 | bgp, afi, safi, evp, pi, irt->vnis, | |
4021 | import); | |
50f74cf1 | 4022 | if (vrf_irt) |
40381db7 DS |
4023 | install_uninstall_route_in_vrfs( |
4024 | bgp, afi, safi, evp, pi, vrf_irt->vrfs, | |
4025 | import); | |
50f74cf1 | 4026 | } |
4027 | ||
4028 | /* es route is imported into the es table */ | |
4029 | if (evp->prefix.route_type == BGP_EVPN_ES_ROUTE) { | |
4030 | ||
4031 | /* we will match based on the entire esi to avoid | |
fff7545a | 4032 | * import of an es route for esi2 into esi1 |
50f74cf1 | 4033 | */ |
c44ab6f1 | 4034 | es = bgp_evpn_es_find(&evp->prefix.es_addr.esi); |
9c7edc03 | 4035 | if (es && bgp_evpn_is_es_local(es)) |
c44ab6f1 | 4036 | bgp_evpn_es_route_install_uninstall( |
40381db7 | 4037 | bgp, es, afi, safi, evp, pi, import); |
d62a17ae | 4038 | } |
d62a17ae | 4039 | } |
4040 | ||
4041 | return 0; | |
128ea8ab | 4042 | } |
4043 | ||
26c03e43 AK |
4044 | /* |
4045 | * Install or uninstall route for appropriate VNIs/ESIs. | |
4046 | */ | |
4047 | static int install_uninstall_evpn_route(struct bgp *bgp, afi_t afi, safi_t safi, | |
4048 | const struct prefix *p, | |
4049 | struct bgp_path_info *pi, int import) | |
4050 | { | |
4051 | return bgp_evpn_install_uninstall_table(bgp, afi, safi, p, pi, import, | |
4052 | true, true); | |
4053 | } | |
4054 | ||
74efb822 AK |
4055 | void bgp_evpn_import_type2_route(struct bgp_path_info *pi, int import) |
4056 | { | |
4057 | struct bgp *bgp_evpn; | |
4058 | ||
4059 | bgp_evpn = bgp_get_evpn(); | |
4060 | if (!bgp_evpn) | |
4061 | return; | |
4062 | ||
4063 | install_uninstall_evpn_route(bgp_evpn, AFI_L2VPN, SAFI_EVPN, | |
4064 | &pi->net->p, pi, import); | |
4065 | } | |
4066 | ||
2bb9eff4 DS |
4067 | /* |
4068 | * delete and withdraw all ipv4 and ipv6 routes in the vrf table as type-5 | |
4069 | * routes | |
4070 | */ | |
80b140af MK |
4071 | static void delete_withdraw_vrf_routes(struct bgp *bgp_vrf) |
4072 | { | |
5fd9c12b KA |
4073 | /* Delete ipv4 default route and withdraw from peers */ |
4074 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
4075 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
4076 | SAFI_UNICAST, false); | |
4077 | ||
80b140af | 4078 | /* delete all ipv4 routes and withdraw from peers */ |
fdf19f06 MK |
4079 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
4080 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 4081 | |
5fd9c12b KA |
4082 | /* Delete ipv6 default route and withdraw from peers */ |
4083 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
4084 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
4085 | SAFI_UNICAST, false); | |
4086 | ||
80b140af | 4087 | /* delete all ipv6 routes and withdraw from peers */ |
fdf19f06 MK |
4088 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
4089 | bgp_evpn_withdraw_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
80b140af MK |
4090 | } |
4091 | ||
2bb9eff4 DS |
4092 | /* |
4093 | * update and advertise all ipv4 and ipv6 routes in thr vrf table as type-5 | |
4094 | * routes | |
4095 | */ | |
5394a276 | 4096 | void update_advertise_vrf_routes(struct bgp *bgp_vrf) |
80b140af | 4097 | { |
5394a276 CS |
4098 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
4099 | ||
4100 | bgp_evpn = bgp_get_evpn(); | |
4101 | if (!bgp_evpn) | |
4102 | return; | |
4103 | ||
80b140af | 4104 | /* update all ipv4 routes */ |
fdf19f06 MK |
4105 | if (advertise_type5_routes(bgp_vrf, AFI_IP)) |
4106 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP, SAFI_UNICAST); | |
80b140af | 4107 | |
5fd9c12b KA |
4108 | /* update ipv4 default route and withdraw from peers */ |
4109 | if (evpn_default_originate_set(bgp_vrf, AFI_IP, SAFI_UNICAST)) | |
4110 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP, | |
4111 | SAFI_UNICAST, true); | |
4112 | ||
80b140af | 4113 | /* update all ipv6 routes */ |
fdf19f06 MK |
4114 | if (advertise_type5_routes(bgp_vrf, AFI_IP6)) |
4115 | bgp_evpn_advertise_type5_routes(bgp_vrf, AFI_IP6, SAFI_UNICAST); | |
5fd9c12b KA |
4116 | |
4117 | /* update ipv6 default route and withdraw from peers */ | |
4118 | if (evpn_default_originate_set(bgp_vrf, AFI_IP6, SAFI_UNICAST)) | |
4119 | bgp_evpn_install_uninstall_default_route(bgp_vrf, AFI_IP6, | |
4120 | SAFI_UNICAST, true); | |
4121 | ||
80b140af MK |
4122 | } |
4123 | ||
676f83b9 | 4124 | /* |
4125 | * update and advertise local routes for a VRF as type-5 routes. | |
4126 | * This is invoked upon RD change for a VRF. Note taht the processing is only | |
4127 | * done in the global route table using the routes which already exist in the | |
4128 | * VRF routing table | |
4129 | */ | |
80b140af | 4130 | static void update_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 4131 | { |
80b140af MK |
4132 | /* skip if the RD is configured */ |
4133 | if (is_vrf_rd_configured(bgp_vrf)) | |
4134 | return; | |
4135 | ||
4136 | /* derive the RD for the VRF based on new router-id */ | |
4137 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); | |
4138 | ||
4139 | /* update advertise ipv4|ipv6 routes as type-5 routes */ | |
4140 | update_advertise_vrf_routes(bgp_vrf); | |
676f83b9 | 4141 | } |
4142 | ||
4143 | /* | |
4144 | * Delete and withdraw all type-5 routes for the RD corresponding to VRF. | |
4145 | * This is invoked upon VRF RD change. The processing is done only from global | |
4146 | * table. | |
4147 | */ | |
80b140af | 4148 | static void withdraw_router_id_vrf(struct bgp *bgp_vrf) |
676f83b9 | 4149 | { |
80b140af MK |
4150 | /* skip if the RD is configured */ |
4151 | if (is_vrf_rd_configured(bgp_vrf)) | |
4152 | return; | |
4153 | ||
4154 | /* delete/withdraw ipv4|ipv6 routes as type-5 routes */ | |
4155 | delete_withdraw_vrf_routes(bgp_vrf); | |
676f83b9 | 4156 | } |
4157 | ||
852d9f97 SW |
4158 | static void update_advertise_vni_route(struct bgp *bgp, struct bgpevpn *vpn, |
4159 | struct bgp_dest *dest) | |
4160 | { | |
4161 | struct bgp_dest *global_dest; | |
4162 | struct bgp_path_info *pi, *global_pi; | |
4163 | struct attr *attr; | |
4164 | afi_t afi = AFI_L2VPN; | |
4165 | safi_t safi = SAFI_EVPN; | |
4166 | ||
4167 | struct prefix_evpn tmp_evp; | |
4168 | const struct prefix_evpn *evp = | |
4169 | (const struct prefix_evpn *)bgp_dest_get_prefix(dest); | |
4170 | ||
4171 | /* | |
4172 | * We have already processed type-3 routes. | |
4173 | * Process only type-1 and type-2 routes here. | |
4174 | */ | |
4175 | if (evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE && | |
4176 | evp->prefix.route_type != BGP_EVPN_AD_ROUTE) | |
4177 | return; | |
4178 | ||
4179 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
4180 | if (pi->peer == bgp->peer_self && pi->type == ZEBRA_ROUTE_BGP && | |
4181 | pi->sub_type == BGP_ROUTE_STATIC) | |
4182 | break; | |
4183 | if (!pi) | |
4184 | return; | |
4185 | ||
4186 | /* | |
4187 | * VNI table MAC-IP prefixes don't have MAC so make sure it's | |
4188 | * set from path info here. | |
4189 | */ | |
4190 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { | |
4191 | if (is_evpn_prefix_ipaddr_none(evp)) { | |
4192 | /* VNI MAC -> Global */ | |
4193 | evpn_type2_prefix_global_copy( | |
4194 | &tmp_evp, evp, NULL /* mac */, | |
4195 | evpn_type2_path_info_get_ip(pi)); | |
4196 | } else { | |
4197 | /* VNI IP -> Global */ | |
4198 | evpn_type2_prefix_global_copy( | |
4199 | &tmp_evp, evp, evpn_type2_path_info_get_mac(pi), | |
4200 | NULL /* ip */); | |
4201 | } | |
4202 | } else { | |
4203 | memcpy(&tmp_evp, evp, sizeof(tmp_evp)); | |
4204 | } | |
4205 | ||
4206 | /* Create route in global routing table using this route entry's | |
4207 | * attribute. | |
4208 | */ | |
4209 | attr = pi->attr; | |
4210 | global_dest = bgp_evpn_global_node_get(bgp->rib[afi][safi], afi, safi, | |
4211 | &tmp_evp, &vpn->prd, NULL); | |
4212 | assert(global_dest); | |
4213 | ||
4214 | if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE) { | |
4215 | /* Type-2 route */ | |
4216 | update_evpn_route_entry( | |
4217 | bgp, vpn, afi, safi, global_dest, attr, NULL /* mac */, | |
4218 | NULL /* ip */, 1, &global_pi, 0, | |
4219 | mac_mobility_seqnum(attr), false /* setup_sync */, | |
4220 | NULL /* old_is_sync */); | |
4221 | } else { | |
4222 | /* Type-1 route */ | |
4223 | struct bgp_evpn_es *es; | |
4224 | int route_changed = 0; | |
4225 | ||
4226 | es = bgp_evpn_es_find(&evp->prefix.ead_addr.esi); | |
4227 | bgp_evpn_mh_route_update(bgp, es, vpn, afi, safi, global_dest, | |
4228 | attr, &global_pi, &route_changed); | |
4229 | } | |
4230 | ||
4231 | /* Schedule for processing and unlock node. */ | |
4232 | bgp_process(bgp, global_dest, afi, safi); | |
4233 | bgp_dest_unlock_node(global_dest); | |
4234 | } | |
4235 | ||
90e60aa7 | 4236 | /* |
4237 | * Update and advertise local routes for a VNI. Invoked upon router-id | |
4238 | * change. Note that the processing is done only on the global route table | |
4239 | * using routes that already exist in the per-VNI table. | |
4240 | */ | |
852d9f97 | 4241 | static void update_advertise_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
d62a17ae | 4242 | { |
4243 | struct prefix_evpn p; | |
9bcb3eef | 4244 | struct bgp_dest *dest, *global_dest; |
852d9f97 | 4245 | struct bgp_path_info *pi; |
d62a17ae | 4246 | struct attr *attr; |
4247 | afi_t afi = AFI_L2VPN; | |
4248 | safi_t safi = SAFI_EVPN; | |
4249 | ||
4250 | /* Locate type-3 route for VNI in the per-VNI table and use its | |
4251 | * attributes to create and advertise the type-3 route for this VNI | |
4252 | * in the global table. | |
fd069644 DS |
4253 | * |
4254 | * RT-3 only if doing head-end replication | |
d62a17ae | 4255 | */ |
833b8a50 AK |
4256 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
4257 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 4258 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
852d9f97 | 4259 | dest = bgp_evpn_vni_node_lookup(vpn, &p, NULL); |
9bcb3eef | 4260 | if (!dest) /* unexpected */ |
852d9f97 | 4261 | return; |
9bcb3eef | 4262 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) |
fd069644 DS |
4263 | if (pi->peer == bgp->peer_self && |
4264 | pi->type == ZEBRA_ROUTE_BGP | |
4265 | && pi->sub_type == BGP_ROUTE_STATIC) | |
4266 | break; | |
fd43ffd9 DA |
4267 | if (!pi) { |
4268 | bgp_dest_unlock_node(dest); | |
852d9f97 | 4269 | return; |
fd43ffd9 | 4270 | } |
852d9f97 | 4271 | |
fd069644 | 4272 | attr = pi->attr; |
d62a17ae | 4273 | |
34c7f35f SW |
4274 | global_dest = bgp_evpn_global_node_get( |
4275 | bgp->rib[afi][safi], afi, safi, &p, &vpn->prd, NULL); | |
4276 | update_evpn_route_entry( | |
4277 | bgp, vpn, afi, safi, global_dest, attr, NULL /* mac */, | |
852d9f97 | 4278 | NULL /* ip */, 1, &pi, 0, mac_mobility_seqnum(attr), |
34c7f35f | 4279 | false /* setup_sync */, NULL /* old_is_sync */); |
d62a17ae | 4280 | |
fd069644 | 4281 | /* Schedule for processing and unlock node. */ |
9bcb3eef DS |
4282 | bgp_process(bgp, global_dest, afi, safi); |
4283 | bgp_dest_unlock_node(global_dest); | |
fd069644 | 4284 | } |
d62a17ae | 4285 | |
852d9f97 SW |
4286 | /* Now, walk this VNI's MAC & IP route table and use the route and its |
4287 | * attribute to create and schedule route in global table. | |
d62a17ae | 4288 | */ |
852d9f97 SW |
4289 | for (dest = bgp_table_top(vpn->mac_table); dest; |
4290 | dest = bgp_route_next(dest)) | |
4291 | update_advertise_vni_route(bgp, vpn, dest); | |
d62a17ae | 4292 | |
852d9f97 SW |
4293 | for (dest = bgp_table_top(vpn->ip_table); dest; |
4294 | dest = bgp_route_next(dest)) | |
4295 | update_advertise_vni_route(bgp, vpn, dest); | |
90e60aa7 | 4296 | } |
4297 | ||
4298 | /* | |
4299 | * Delete (and withdraw) local routes for a VNI - only from the global | |
4300 | * table. Invoked upon router-id change. | |
4301 | */ | |
d62a17ae | 4302 | static int delete_withdraw_vni_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 4303 | { |
d62a17ae | 4304 | struct prefix_evpn p; |
9bcb3eef | 4305 | struct bgp_dest *global_dest; |
40381db7 | 4306 | struct bgp_path_info *pi; |
d62a17ae | 4307 | afi_t afi = AFI_L2VPN; |
4308 | safi_t safi = SAFI_EVPN; | |
90e60aa7 | 4309 | |
d62a17ae | 4310 | /* Delete and withdraw locally learnt type-2 routes (MACIP) |
4311 | * for this VNI - from the global table. | |
4312 | */ | |
17151ae9 | 4313 | delete_global_type2_routes(bgp, vpn); |
90e60aa7 | 4314 | |
d62a17ae | 4315 | /* Remove type-3 route for this VNI from global table. */ |
4316 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
34c7f35f SW |
4317 | global_dest = bgp_evpn_global_node_lookup(bgp->rib[afi][safi], afi, |
4318 | safi, &p, &vpn->prd, NULL); | |
9bcb3eef | 4319 | if (global_dest) { |
d62a17ae | 4320 | /* Delete route entry in the global EVPN table. */ |
9bcb3eef | 4321 | delete_evpn_route_entry(bgp, afi, safi, global_dest, &pi); |
90e60aa7 | 4322 | |
d62a17ae | 4323 | /* Schedule for processing - withdraws to peers happen from |
4324 | * this table. | |
4325 | */ | |
40381db7 | 4326 | if (pi) |
9bcb3eef DS |
4327 | bgp_process(bgp, global_dest, afi, safi); |
4328 | bgp_dest_unlock_node(global_dest); | |
d62a17ae | 4329 | } |
90e60aa7 | 4330 | |
d60f63f0 AD |
4331 | |
4332 | delete_global_ead_evi_routes(bgp, vpn); | |
d62a17ae | 4333 | return 0; |
90e60aa7 | 4334 | } |
4335 | ||
2d48ee25 | 4336 | /* |
4337 | * Handle router-id change. Update and advertise local routes corresponding | |
4338 | * to this VNI from peers. Note that this is invoked after updating the | |
4339 | * router-id. The routes in the per-VNI table are used to create routes in | |
4340 | * the global table and schedule them. | |
4341 | */ | |
e3b78da8 | 4342 | static void update_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 4343 | { |
e3b78da8 | 4344 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 4345 | |
d62a17ae | 4346 | /* Skip VNIs with configured RD. */ |
4347 | if (is_rd_configured(vpn)) | |
4348 | return; | |
2d48ee25 | 4349 | |
d62a17ae | 4350 | bgp_evpn_derive_auto_rd(bgp, vpn); |
4351 | update_advertise_vni_routes(bgp, vpn); | |
2d48ee25 | 4352 | } |
4353 | ||
4354 | /* | |
4355 | * Handle router-id change. Delete and withdraw local routes corresponding | |
4356 | * to this VNI from peers. Note that this is invoked prior to updating | |
4357 | * the router-id and is done only on the global route table, the routes | |
4358 | * are needed in the per-VNI table to re-advertise with new router id. | |
4359 | */ | |
e3b78da8 | 4360 | static void withdraw_router_id_vni(struct hash_bucket *bucket, struct bgp *bgp) |
2d48ee25 | 4361 | { |
e3b78da8 | 4362 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
2d48ee25 | 4363 | |
d62a17ae | 4364 | /* Skip VNIs with configured RD. */ |
4365 | if (is_rd_configured(vpn)) | |
4366 | return; | |
2d48ee25 | 4367 | |
d62a17ae | 4368 | delete_withdraw_vni_routes(bgp, vpn); |
2d48ee25 | 4369 | } |
4370 | ||
fd069644 DS |
4371 | /* |
4372 | * Create RT-3 for a VNI and schedule for processing and advertisement. | |
4373 | * This is invoked upon flooding mode changing to head-end replication. | |
4374 | */ | |
e3b78da8 | 4375 | static void create_advertise_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 4376 | { |
e3b78da8 | 4377 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
4378 | struct bgp *bgp = data; |
4379 | struct prefix_evpn p; | |
4380 | ||
833b8a50 AK |
4381 | if (!vpn || !is_vni_live(vpn) || |
4382 | bgp_evpn_vni_flood_mode_get(bgp, vpn) | |
4383 | != VXLAN_FLOOD_HEAD_END_REPL) | |
fd069644 DS |
4384 | return; |
4385 | ||
4386 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
c44ab6f1 | 4387 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) |
fd069644 DS |
4388 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
4389 | "Type3 route creation failure for VNI %u", vpn->vni); | |
4390 | } | |
4391 | ||
4392 | /* | |
4393 | * Delete RT-3 for a VNI and schedule for processing and withdrawal. | |
4394 | * This is invoked upon flooding mode changing to drop BUM packets. | |
4395 | */ | |
e3b78da8 | 4396 | static void delete_withdraw_type3(struct hash_bucket *bucket, void *data) |
fd069644 | 4397 | { |
e3b78da8 | 4398 | struct bgpevpn *vpn = bucket->data; |
fd069644 DS |
4399 | struct bgp *bgp = data; |
4400 | struct prefix_evpn p; | |
4401 | ||
4402 | if (!vpn || !is_vni_live(vpn)) | |
4403 | return; | |
4404 | ||
4405 | build_evpn_type3_prefix(&p, vpn->originator_ip); | |
4406 | delete_evpn_route(bgp, vpn, &p); | |
4407 | } | |
4408 | ||
128ea8ab | 4409 | /* |
4410 | * Process received EVPN type-2 route (advertise or withdraw). | |
4411 | */ | |
d62a17ae | 4412 | static int process_type2_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
4413 | struct attr *attr, uint8_t *pfx, int psize, |
4414 | uint32_t addpath_id) | |
d62a17ae | 4415 | { |
4416 | struct prefix_rd prd; | |
e121d831 QY |
4417 | struct prefix_evpn p = {}; |
4418 | struct bgp_route_evpn evpn = {}; | |
d7c0a89a QY |
4419 | uint8_t ipaddr_len; |
4420 | uint8_t macaddr_len; | |
e121d831 QY |
4421 | /* holds the VNI(s) as in packet */ |
4422 | mpls_label_t label[BGP_MAX_LABELS] = {}; | |
d7c0a89a | 4423 | uint32_t num_labels = 0; |
554cd77a | 4424 | uint32_t eth_tag; |
d62a17ae | 4425 | int ret; |
4426 | ||
4427 | /* Type-2 route should be either 33, 37 or 49 bytes or an | |
4428 | * additional 3 bytes if there is a second label (VNI): | |
4429 | * RD (8), ESI (10), Eth Tag (4), MAC Addr Len (1), | |
4430 | * MAC Addr (6), IP len (1), IP (0, 4 or 16), | |
4431 | * MPLS Lbl1 (3), MPLS Lbl2 (0 or 3) | |
4432 | */ | |
4433 | if (psize != 33 && psize != 37 && psize != 49 && psize != 36 | |
4434 | && psize != 40 && psize != 52) { | |
e50f7cfd | 4435 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4436 | "%u:%s - Rx EVPN Type-2 NLRI with invalid length %d", |
4437 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4438 | return -1; |
4439 | } | |
4440 | ||
e121d831 QY |
4441 | struct stream *pkt = stream_new(psize); |
4442 | stream_put(pkt, pfx, psize); | |
554cd77a | 4443 | |
d62a17ae | 4444 | /* Make prefix_rd */ |
4445 | prd.family = AF_UNSPEC; | |
4446 | prd.prefixlen = 64; | |
e121d831 QY |
4447 | |
4448 | STREAM_GET(&prd.val, pkt, 8); | |
d62a17ae | 4449 | |
4450 | /* Make EVPN prefix. */ | |
b03b8898 | 4451 | p.family = AF_EVPN; |
50f74cf1 | 4452 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4453 | p.prefix.route_type = BGP_EVPN_MAC_IP_ROUTE; |
4454 | ||
554cd77a | 4455 | /* Copy Ethernet Seg Identifier */ |
9c7edc03 | 4456 | if (attr) { |
e121d831 QY |
4457 | STREAM_GET(&attr->esi, pkt, sizeof(esi_t)); |
4458 | ||
74efb822 | 4459 | if (bgp_evpn_is_esi_local_and_non_bypass(&attr->esi)) |
9c7edc03 AK |
4460 | attr->es_flags |= ATTR_ES_IS_LOCAL; |
4461 | else | |
4462 | attr->es_flags &= ~ATTR_ES_IS_LOCAL; | |
e121d831 QY |
4463 | } else { |
4464 | STREAM_FORWARD_GETP(pkt, sizeof(esi_t)); | |
9c7edc03 | 4465 | } |
d62a17ae | 4466 | |
554cd77a | 4467 | /* Copy Ethernet Tag */ |
e121d831 | 4468 | STREAM_GET(ð_tag, pkt, 4); |
3714a385 | 4469 | p.prefix.macip_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4470 | |
4471 | /* Get the MAC Addr len */ | |
e121d831 | 4472 | STREAM_GETC(pkt, macaddr_len); |
d62a17ae | 4473 | |
4474 | /* Get the MAC Addr */ | |
28328ea9 | 4475 | if (macaddr_len == (ETH_ALEN * 8)) { |
e121d831 | 4476 | STREAM_GET(&p.prefix.macip_addr.mac.octet, pkt, ETH_ALEN); |
d62a17ae | 4477 | } else { |
af4c2728 | 4478 | flog_err( |
e50f7cfd | 4479 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4480 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported MAC address length %d", |
4481 | peer->bgp->vrf_id, peer->host, macaddr_len); | |
e121d831 | 4482 | goto fail; |
d62a17ae | 4483 | } |
4484 | ||
4485 | ||
4486 | /* Get the IP. */ | |
e121d831 QY |
4487 | STREAM_GETC(pkt, ipaddr_len); |
4488 | ||
d62a17ae | 4489 | if (ipaddr_len != 0 && ipaddr_len != IPV4_MAX_BITLEN |
4490 | && ipaddr_len != IPV6_MAX_BITLEN) { | |
af4c2728 | 4491 | flog_err( |
e50f7cfd | 4492 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4493 | "%u:%s - Rx EVPN Type-2 NLRI with unsupported IP address length %d", |
4494 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
e121d831 | 4495 | goto fail; |
d62a17ae | 4496 | } |
4497 | ||
4498 | if (ipaddr_len) { | |
4499 | ipaddr_len /= 8; /* Convert to bytes. */ | |
3714a385 | 4500 | p.prefix.macip_addr.ip.ipa_type = (ipaddr_len == IPV4_MAX_BYTELEN) |
d62a17ae | 4501 | ? IPADDR_V4 |
4502 | : IPADDR_V6; | |
e121d831 | 4503 | STREAM_GET(&p.prefix.macip_addr.ip.ip.addr, pkt, ipaddr_len); |
d62a17ae | 4504 | } |
d62a17ae | 4505 | |
b57ba6d2 | 4506 | /* Get the VNI(s). Stored as bytes here. */ |
e121d831 | 4507 | STREAM_GET(&label[0], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 4508 | num_labels++; |
e121d831 | 4509 | |
b57ba6d2 | 4510 | /* Do we have a second VNI? */ |
e121d831 | 4511 | if (STREAM_READABLE(pkt)) { |
b57ba6d2 | 4512 | num_labels++; |
e121d831 | 4513 | STREAM_GET(&label[1], pkt, BGP_LABEL_BYTES); |
b57ba6d2 | 4514 | } |
d62a17ae | 4515 | |
4516 | /* Process the route. */ | |
4517 | if (attr) | |
4518 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
4519 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 4520 | &prd, &label[0], num_labels, 0, &evpn); |
d62a17ae | 4521 | else |
4522 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4523 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
554cd77a | 4524 | &prd, &label[0], num_labels, &evpn); |
e121d831 QY |
4525 | goto done; |
4526 | ||
4527 | fail: | |
4528 | stream_failure: | |
4529 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, | |
4530 | "%u:%s - Rx EVPN Type-2 NLRI - corrupt, discarding", | |
4531 | peer->bgp->vrf_id, peer->host); | |
4532 | ret = -1; | |
4533 | done: | |
4534 | stream_free(pkt); | |
d62a17ae | 4535 | return ret; |
128ea8ab | 4536 | } |
4537 | ||
4538 | /* | |
4539 | * Process received EVPN type-3 route (advertise or withdraw). | |
4540 | */ | |
d62a17ae | 4541 | static int process_type3_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a QY |
4542 | struct attr *attr, uint8_t *pfx, int psize, |
4543 | uint32_t addpath_id) | |
d62a17ae | 4544 | { |
4545 | struct prefix_rd prd; | |
4546 | struct prefix_evpn p; | |
d7c0a89a | 4547 | uint8_t ipaddr_len; |
554cd77a | 4548 | uint32_t eth_tag; |
d62a17ae | 4549 | int ret; |
4550 | ||
4551 | /* Type-3 route should be either 17 or 29 bytes: RD (8), Eth Tag (4), | |
4552 | * IP len (1) and IP (4 or 16). | |
4553 | */ | |
4554 | if (psize != 17 && psize != 29) { | |
e50f7cfd | 4555 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4556 | "%u:%s - Rx EVPN Type-3 NLRI with invalid length %d", |
4557 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4558 | return -1; |
4559 | } | |
4560 | ||
7fd077aa | 4561 | /* If PMSI is present, log if it is anything other than IR. |
4562 | * Note: We just simply ignore the values as it is not clear if | |
4563 | * doing anything else is better. | |
4564 | */ | |
4565 | if (attr && | |
4566 | (attr->flag & ATTR_FLAG_BIT(BGP_ATTR_PMSI_TUNNEL))) { | |
2a3f51cf DS |
4567 | enum pta_type pmsi_tnl_type = bgp_attr_get_pmsi_tnl_type(attr); |
4568 | ||
4569 | if (pmsi_tnl_type != PMSI_TNLTYPE_INGR_REPL | |
4570 | && pmsi_tnl_type != PMSI_TNLTYPE_PIM_SM) { | |
4571 | flog_warn( | |
4572 | EC_BGP_EVPN_PMSI_PRESENT, | |
4573 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported PTA %d", | |
4574 | peer->bgp->vrf_id, peer->host, pmsi_tnl_type); | |
7fd077aa | 4575 | } |
4576 | } | |
4577 | ||
d62a17ae | 4578 | /* Make prefix_rd */ |
4579 | prd.family = AF_UNSPEC; | |
4580 | prd.prefixlen = 64; | |
4581 | memcpy(&prd.val, pfx, 8); | |
4582 | pfx += 8; | |
4583 | ||
4584 | /* Make EVPN prefix. */ | |
6006b807 | 4585 | memset(&p, 0, sizeof(p)); |
b03b8898 | 4586 | p.family = AF_EVPN; |
50f74cf1 | 4587 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4588 | p.prefix.route_type = BGP_EVPN_IMET_ROUTE; |
4589 | ||
554cd77a VB |
4590 | /* Copy Ethernet Tag */ |
4591 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4592 | p.prefix.imet_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4593 | pfx += 4; |
4594 | ||
4595 | /* Get the IP. */ | |
4596 | ipaddr_len = *pfx++; | |
4597 | if (ipaddr_len == IPV4_MAX_BITLEN) { | |
3714a385 | 4598 | p.prefix.imet_addr.ip.ipa_type = IPADDR_V4; |
4599 | memcpy(&p.prefix.imet_addr.ip.ip.addr, pfx, IPV4_MAX_BYTELEN); | |
d62a17ae | 4600 | } else { |
af4c2728 | 4601 | flog_err( |
e50f7cfd | 4602 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4603 | "%u:%s - Rx EVPN Type-3 NLRI with unsupported IP address length %d", |
4604 | peer->bgp->vrf_id, peer->host, ipaddr_len); | |
4605 | return -1; | |
4606 | } | |
4607 | ||
4608 | /* Process the route. */ | |
4609 | if (attr) | |
4610 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, | |
4611 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4612 | &prd, NULL, 0, 0, NULL); |
d62a17ae | 4613 | else |
4614 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, | |
4615 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4616 | &prd, NULL, 0, NULL); |
d62a17ae | 4617 | return ret; |
128ea8ab | 4618 | } |
4619 | ||
4620 | /* | |
4621 | * Process received EVPN type-5 route (advertise or withdraw). | |
4622 | */ | |
d62a17ae | 4623 | static int process_type5_route(struct peer *peer, afi_t afi, safi_t safi, |
d7c0a89a | 4624 | struct attr *attr, uint8_t *pfx, int psize, |
f007bdce | 4625 | uint32_t addpath_id) |
d62a17ae | 4626 | { |
4627 | struct prefix_rd prd; | |
4628 | struct prefix_evpn p; | |
4629 | struct bgp_route_evpn evpn; | |
d7c0a89a QY |
4630 | uint8_t ippfx_len; |
4631 | uint32_t eth_tag; | |
b57ba6d2 | 4632 | mpls_label_t label; /* holds the VNI as in the packet */ |
d62a17ae | 4633 | int ret; |
66ff6089 | 4634 | bool is_valid_update = true; |
d62a17ae | 4635 | |
4636 | /* Type-5 route should be 34 or 58 bytes: | |
4637 | * RD (8), ESI (10), Eth Tag (4), IP len (1), IP (4 or 16), | |
4638 | * GW (4 or 16) and VNI (3). | |
4639 | * Note that the IP and GW should both be IPv4 or both IPv6. | |
4640 | */ | |
4641 | if (psize != 34 && psize != 58) { | |
e50f7cfd | 4642 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
1c50c1c0 QY |
4643 | "%u:%s - Rx EVPN Type-5 NLRI with invalid length %d", |
4644 | peer->bgp->vrf_id, peer->host, psize); | |
d62a17ae | 4645 | return -1; |
4646 | } | |
4647 | ||
4648 | /* Make prefix_rd */ | |
4649 | prd.family = AF_UNSPEC; | |
4650 | prd.prefixlen = 64; | |
4651 | memcpy(&prd.val, pfx, 8); | |
4652 | pfx += 8; | |
4653 | ||
4654 | /* Make EVPN prefix. */ | |
6006b807 | 4655 | memset(&p, 0, sizeof(p)); |
b03b8898 | 4656 | p.family = AF_EVPN; |
50f74cf1 | 4657 | p.prefixlen = EVPN_ROUTE_PREFIXLEN; |
d62a17ae | 4658 | p.prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE; |
4659 | ||
4660 | /* Additional information outside of prefix - ESI and GW IP */ | |
4661 | memset(&evpn, 0, sizeof(evpn)); | |
4662 | ||
66ff6089 | 4663 | /* Fetch ESI overlay index */ |
c44ab6f1 | 4664 | if (attr) |
66ff6089 | 4665 | memcpy(&evpn.eth_s_id, pfx, sizeof(esi_t)); |
c44ab6f1 | 4666 | pfx += ESI_BYTES; |
d62a17ae | 4667 | |
4668 | /* Fetch Ethernet Tag. */ | |
4669 | memcpy(ð_tag, pfx, 4); | |
3714a385 | 4670 | p.prefix.prefix_addr.eth_tag = ntohl(eth_tag); |
d62a17ae | 4671 | pfx += 4; |
4672 | ||
4673 | /* Fetch IP prefix length. */ | |
4674 | ippfx_len = *pfx++; | |
4675 | if (ippfx_len > IPV6_MAX_BITLEN) { | |
af4c2728 | 4676 | flog_err( |
e50f7cfd | 4677 | EC_BGP_EVPN_ROUTE_INVALID, |
d62a17ae | 4678 | "%u:%s - Rx EVPN Type-5 NLRI with invalid IP Prefix length %d", |
4679 | peer->bgp->vrf_id, peer->host, ippfx_len); | |
4680 | return -1; | |
4681 | } | |
3714a385 | 4682 | p.prefix.prefix_addr.ip_prefix_length = ippfx_len; |
d62a17ae | 4683 | |
4684 | /* Determine IPv4 or IPv6 prefix */ | |
4685 | /* Since the address and GW are from the same family, this just becomes | |
4686 | * a simple check on the total size. | |
4687 | */ | |
4688 | if (psize == 34) { | |
3714a385 | 4689 | SET_IPADDR_V4(&p.prefix.prefix_addr.ip); |
4690 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 4691 | pfx += 4; |
860e740b IR |
4692 | SET_IPADDR_V4(&evpn.gw_ip); |
4693 | memcpy(&evpn.gw_ip.ipaddr_v4, pfx, 4); | |
d62a17ae | 4694 | pfx += 4; |
d62a17ae | 4695 | } else { |
3714a385 | 4696 | SET_IPADDR_V6(&p.prefix.prefix_addr.ip); |
8643c2e5 DA |
4697 | memcpy(&p.prefix.prefix_addr.ip.ipaddr_v6, pfx, |
4698 | IPV6_MAX_BYTELEN); | |
4699 | pfx += IPV6_MAX_BYTELEN; | |
860e740b IR |
4700 | SET_IPADDR_V6(&evpn.gw_ip); |
4701 | memcpy(&evpn.gw_ip.ipaddr_v6, pfx, IPV6_MAX_BYTELEN); | |
8643c2e5 | 4702 | pfx += IPV6_MAX_BYTELEN; |
d62a17ae | 4703 | } |
4704 | ||
b57ba6d2 MK |
4705 | /* Get the VNI (in MPLS label field). Stored as bytes here. */ |
4706 | memset(&label, 0, sizeof(label)); | |
4707 | memcpy(&label, pfx, BGP_LABEL_BYTES); | |
6b11bd8d | 4708 | |
4709 | /* | |
4710 | * If in future, we are required to access additional fields, | |
996c9314 LB |
4711 | * we MUST increment pfx by BGP_LABEL_BYTES in before reading the next |
4712 | * field | |
6b11bd8d | 4713 | */ |
d62a17ae | 4714 | |
66ff6089 AD |
4715 | /* |
4716 | * An update containing a non-zero gateway IP and a non-zero ESI | |
4717 | * at the same time is should be treated as withdraw | |
4718 | */ | |
860e740b IR |
4719 | if (bgp_evpn_is_esi_valid(&evpn.eth_s_id) && |
4720 | !ipaddr_is_zero(&evpn.gw_ip)) { | |
66ff6089 AD |
4721 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
4722 | "%s - Rx EVPN Type-5 ESI and gateway-IP both non-zero.", | |
4723 | peer->host); | |
4724 | is_valid_update = false; | |
4725 | } else if (bgp_evpn_is_esi_valid(&evpn.eth_s_id)) | |
4726 | evpn.type = OVERLAY_INDEX_ESI; | |
860e740b | 4727 | else if (!ipaddr_is_zero(&evpn.gw_ip)) |
66ff6089 | 4728 | evpn.type = OVERLAY_INDEX_GATEWAY_IP; |
c6ec0c74 | 4729 | if (attr) { |
860e740b IR |
4730 | if (is_zero_mac(&attr->rmac) && |
4731 | !bgp_evpn_is_esi_valid(&evpn.eth_s_id) && | |
4732 | ipaddr_is_zero(&evpn.gw_ip) && label == 0) { | |
66ff6089 AD |
4733 | flog_err(EC_BGP_EVPN_ROUTE_INVALID, |
4734 | "%s - Rx EVPN Type-5 ESI, gateway-IP, RMAC and label all zero", | |
4735 | peer->host); | |
c6ec0c74 | 4736 | is_valid_update = false; |
66ff6089 | 4737 | } |
c6ec0c74 KA |
4738 | |
4739 | if (is_mcast_mac(&attr->rmac) || is_bcast_mac(&attr->rmac)) | |
4740 | is_valid_update = false; | |
4741 | } | |
4742 | ||
d62a17ae | 4743 | /* Process the route. */ |
66ff6089 | 4744 | if (attr && is_valid_update) |
d62a17ae | 4745 | ret = bgp_update(peer, (struct prefix *)&p, addpath_id, attr, |
4746 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4747 | &prd, &label, 1, 0, &evpn); |
66ff6089 AD |
4748 | else { |
4749 | if (!is_valid_update) { | |
4750 | char attr_str[BUFSIZ] = {0}; | |
4751 | ||
4752 | bgp_dump_attr(attr, attr_str, BUFSIZ); | |
4753 | zlog_warn( | |
4754 | "Invalid update from peer %s vrf %u prefix %pFX attr %s - treat as withdraw", | |
4755 | peer->hostname, peer->bgp->vrf_id, &p, | |
4756 | attr_str); | |
4757 | } | |
d62a17ae | 4758 | ret = bgp_withdraw(peer, (struct prefix *)&p, addpath_id, attr, |
4759 | afi, safi, ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, | |
b57ba6d2 | 4760 | &prd, &label, 1, &evpn); |
66ff6089 | 4761 | } |
d62a17ae | 4762 | |
4763 | return ret; | |
4764 | } | |
4765 | ||
5f040085 DS |
4766 | static void evpn_mpattr_encode_type5(struct stream *s, const struct prefix *p, |
4767 | const struct prefix_rd *prd, | |
4768 | mpls_label_t *label, uint32_t num_labels, | |
4769 | struct attr *attr) | |
d62a17ae | 4770 | { |
4771 | int len; | |
4772 | char temp[16]; | |
5f040085 | 4773 | const struct evpn_addr *p_evpn_p; |
d62a17ae | 4774 | |
b5605493 | 4775 | memset(&temp, 0, sizeof(temp)); |
b03b8898 | 4776 | if (p->family != AF_EVPN) |
d62a17ae | 4777 | return; |
4778 | p_evpn_p = &(p->u.prefix_evpn); | |
4779 | ||
e9fc2840 | 4780 | /* len denites the total len of IP and GW-IP in the route |
523cafc4 | 4781 | IP and GW-IP have to be both ipv4 or ipv6 |
4782 | */ | |
3714a385 | 4783 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
e9fc2840 | 4784 | len = 8; /* IP and GWIP are both ipv4 */ |
d62a17ae | 4785 | else |
e9fc2840 | 4786 | len = 32; /* IP and GWIP are both ipv6 */ |
d62a17ae | 4787 | /* Prefix contains RD, ESI, EthTag, IP length, IP, GWIP and VNI */ |
4788 | stream_putc(s, 8 + 10 + 4 + 1 + len + 3); | |
4789 | stream_put(s, prd->val, 8); | |
6c995628 | 4790 | if (attr && attr->evpn_overlay.type == OVERLAY_INDEX_ESI) |
c44ab6f1 | 4791 | stream_put(s, &attr->esi, sizeof(esi_t)); |
d62a17ae | 4792 | else |
c44ab6f1 | 4793 | stream_put(s, 0, sizeof(esi_t)); |
3714a385 | 4794 | stream_putl(s, p_evpn_p->prefix_addr.eth_tag); |
4795 | stream_putc(s, p_evpn_p->prefix_addr.ip_prefix_length); | |
4796 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) | |
4797 | stream_put_ipv4(s, p_evpn_p->prefix_addr.ip.ipaddr_v4.s_addr); | |
d62a17ae | 4798 | else |
3714a385 | 4799 | stream_put(s, &p_evpn_p->prefix_addr.ip.ipaddr_v6, 16); |
6c995628 | 4800 | if (attr && attr->evpn_overlay.type == OVERLAY_INDEX_GATEWAY_IP) { |
6c924775 DS |
4801 | const struct bgp_route_evpn *evpn_overlay = |
4802 | bgp_attr_get_evpn_overlay(attr); | |
4803 | ||
3714a385 | 4804 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
860e740b IR |
4805 | stream_put_ipv4(s, |
4806 | evpn_overlay->gw_ip.ipaddr_v4.s_addr); | |
d62a17ae | 4807 | else |
860e740b | 4808 | stream_put(s, &(evpn_overlay->gw_ip.ipaddr_v6), 16); |
d62a17ae | 4809 | } else { |
3714a385 | 4810 | if (IS_IPADDR_V4(&p_evpn_p->prefix_addr.ip)) |
d62a17ae | 4811 | stream_put_ipv4(s, 0); |
4812 | else | |
4813 | stream_put(s, &temp, 16); | |
4814 | } | |
4815 | ||
b57ba6d2 | 4816 | if (num_labels) |
d62a17ae | 4817 | stream_put(s, label, 3); |
4818 | else | |
4819 | stream_put3(s, 0); | |
128ea8ab | 4820 | } |
4821 | ||
4822 | /* | |
4823 | * Cleanup specific VNI upon EVPN (advertise-all-vni) being disabled. | |
4824 | */ | |
e3b78da8 | 4825 | static void cleanup_vni_on_disable(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4826 | { |
e3b78da8 | 4827 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4828 | |
d62a17ae | 4829 | /* Remove EVPN routes and schedule for processing. */ |
4830 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 4831 | |
d62a17ae | 4832 | /* Clear "live" flag and see if hash needs to be freed. */ |
4833 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
4834 | if (!is_vni_configured(vpn)) | |
4835 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4836 | } |
4837 | ||
4838 | /* | |
4839 | * Free a VNI entry; iterator function called during cleanup. | |
4840 | */ | |
e3b78da8 | 4841 | static void free_vni_entry(struct hash_bucket *bucket, struct bgp *bgp) |
128ea8ab | 4842 | { |
e3b78da8 | 4843 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
128ea8ab | 4844 | |
d62a17ae | 4845 | delete_all_vni_routes(bgp, vpn); |
4846 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 4847 | } |
4848 | ||
c581d8b0 MK |
4849 | /* |
4850 | * Derive AUTO import RT for BGP VRF - L3VNI | |
4851 | */ | |
4852 | static void evpn_auto_rt_import_add_for_vrf(struct bgp *bgp_vrf) | |
4853 | { | |
5e53dce3 | 4854 | struct bgp *bgp_evpn = NULL; |
10ebe1ab | 4855 | |
58d8948c | 4856 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl, true); |
10ebe1ab MK |
4857 | |
4858 | /* Map RT to VRF */ | |
5e53dce3 | 4859 | bgp_evpn = bgp_get_evpn(); |
58d8948c | 4860 | |
5e53dce3 | 4861 | if (!bgp_evpn) |
10ebe1ab | 4862 | return; |
58d8948c | 4863 | |
10ebe1ab | 4864 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); |
c581d8b0 MK |
4865 | } |
4866 | ||
4867 | /* | |
4868 | * Delete AUTO import RT from BGP VRF - L3VNI | |
4869 | */ | |
4870 | static void evpn_auto_rt_import_delete_for_vrf(struct bgp *bgp_vrf) | |
4871 | { | |
ca337b46 SW |
4872 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_import_rtl, |
4873 | true); | |
c581d8b0 MK |
4874 | } |
4875 | ||
4876 | /* | |
4877 | * Derive AUTO export RT for BGP VRF - L3VNI | |
4878 | */ | |
4879 | static void evpn_auto_rt_export_add_for_vrf(struct bgp *bgp_vrf) | |
4880 | { | |
58d8948c | 4881 | form_auto_rt(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl, true); |
c581d8b0 MK |
4882 | } |
4883 | ||
4884 | /* | |
4885 | * Delete AUTO export RT from BGP VRF - L3VNI | |
4886 | */ | |
4887 | static void evpn_auto_rt_export_delete_for_vrf(struct bgp *bgp_vrf) | |
4888 | { | |
ca337b46 SW |
4889 | evpn_rt_delete_auto(bgp_vrf, bgp_vrf->l3vni, bgp_vrf->vrf_export_rtl, |
4890 | true); | |
c581d8b0 | 4891 | } |
128ea8ab | 4892 | |
f1f8b53c MK |
4893 | static void bgp_evpn_handle_export_rt_change_for_vrf(struct bgp *bgp_vrf) |
4894 | { | |
5e53dce3 | 4895 | struct bgp *bgp_evpn = NULL; |
f1f8b53c MK |
4896 | struct listnode *node = NULL; |
4897 | struct bgpevpn *vpn = NULL; | |
4898 | ||
5e53dce3 T |
4899 | bgp_evpn = bgp_get_evpn(); |
4900 | if (!bgp_evpn) | |
f1f8b53c MK |
4901 | return; |
4902 | ||
4992b4ae MK |
4903 | /* update all type-5 routes */ |
4904 | update_advertise_vrf_routes(bgp_vrf); | |
4905 | ||
4906 | /* update all type-2 routes */ | |
f1f8b53c | 4907 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) |
5e53dce3 | 4908 | update_routes_for_vni(bgp_evpn, vpn); |
f1f8b53c MK |
4909 | } |
4910 | ||
bf1061d8 VB |
4911 | /* |
4912 | * Handle autort change for a given VNI. | |
4913 | */ | |
e3b78da8 | 4914 | static void update_autort_vni(struct hash_bucket *bucket, struct bgp *bgp) |
bf1061d8 | 4915 | { |
e3b78da8 | 4916 | struct bgpevpn *vpn = bucket->data; |
bf1061d8 | 4917 | |
bf1061d8 VB |
4918 | if (!is_import_rt_configured(vpn)) { |
4919 | if (is_vni_live(vpn)) | |
4920 | bgp_evpn_uninstall_routes(bgp, vpn); | |
4921 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); | |
bf1061d8 VB |
4922 | list_delete_all_node(vpn->import_rtl); |
4923 | bgp_evpn_derive_auto_rt_import(bgp, vpn); | |
4924 | if (is_vni_live(vpn)) | |
4925 | bgp_evpn_install_routes(bgp, vpn); | |
4926 | } | |
4927 | if (!is_export_rt_configured(vpn)) { | |
bf1061d8 VB |
4928 | list_delete_all_node(vpn->export_rtl); |
4929 | bgp_evpn_derive_auto_rt_export(bgp, vpn); | |
4930 | if (is_vni_live(vpn)) | |
4931 | bgp_evpn_handle_export_rt_change(bgp, vpn); | |
4932 | } | |
4933 | } | |
4934 | ||
4204021e PG |
4935 | /* |
4936 | * Handle autort change for L3VNI. | |
4937 | */ | |
4938 | static void update_autort_l3vni(struct bgp *bgp) | |
4939 | { | |
4940 | if ((CHECK_FLAG(bgp->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) | |
4941 | && (CHECK_FLAG(bgp->vrf_flags, BGP_VRF_EXPORT_RT_CFGD))) | |
4942 | return; | |
4943 | ||
4944 | if (!CHECK_FLAG(bgp->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) { | |
4945 | if (is_l3vni_live(bgp)) | |
4946 | uninstall_routes_for_vrf(bgp); | |
4947 | ||
4948 | /* Cleanup the RT to VRF mapping */ | |
4949 | bgp_evpn_unmap_vrf_from_its_rts(bgp); | |
4950 | ||
4951 | /* Remove auto generated RT */ | |
4952 | evpn_auto_rt_import_delete_for_vrf(bgp); | |
4953 | ||
4954 | list_delete_all_node(bgp->vrf_import_rtl); | |
4955 | ||
4956 | /* Map auto derive or configured RTs */ | |
4957 | evpn_auto_rt_import_add_for_vrf(bgp); | |
4958 | } | |
4959 | ||
4960 | if (!CHECK_FLAG(bgp->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
4961 | list_delete_all_node(bgp->vrf_export_rtl); | |
4962 | ||
4963 | evpn_auto_rt_export_delete_for_vrf(bgp); | |
4964 | ||
4965 | evpn_auto_rt_export_add_for_vrf(bgp); | |
4966 | ||
4967 | if (is_l3vni_live(bgp)) | |
4968 | bgp_evpn_map_vrf_to_its_rts(bgp); | |
4969 | } | |
4970 | ||
4971 | if (!is_l3vni_live(bgp)) | |
4972 | return; | |
4973 | ||
4974 | /* advertise type-5 routes if needed */ | |
4975 | update_advertise_vrf_routes(bgp); | |
4976 | ||
4977 | /* install all remote routes belonging to this l3vni | |
4978 | * into corresponding vrf | |
4979 | */ | |
4980 | install_routes_for_vrf(bgp); | |
4981 | } | |
4982 | ||
128ea8ab | 4983 | /* |
4984 | * Public functions. | |
4985 | */ | |
4986 | ||
5424b7ba | 4987 | /* withdraw type-5 route corresponding to ip prefix */ |
bd494ec5 | 4988 | void bgp_evpn_withdraw_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
5424b7ba MK |
4989 | afi_t afi, safi_t safi) |
4990 | { | |
4991 | int ret = 0; | |
4992 | struct prefix_evpn evp; | |
5424b7ba | 4993 | |
31310b25 | 4994 | build_type5_prefix_from_ip_prefix(&evp, p); |
5424b7ba | 4995 | ret = delete_evpn_type5_route(bgp_vrf, &evp); |
2dbe669b | 4996 | if (ret) |
af4c2728 | 4997 | flog_err( |
e50f7cfd | 4998 | EC_BGP_EVPN_ROUTE_DELETE, |
2dbe669b DA |
4999 | "%u failed to delete type-5 route for prefix %pFX in vrf %s", |
5000 | bgp_vrf->vrf_id, p, vrf_id_to_name(bgp_vrf->vrf_id)); | |
5424b7ba MK |
5001 | } |
5002 | ||
342dd0c6 | 5003 | /* withdraw all type-5 routes for an address family */ |
996c9314 | 5004 | void bgp_evpn_withdraw_type5_routes(struct bgp *bgp_vrf, afi_t afi, safi_t safi) |
342dd0c6 | 5005 | { |
5006 | struct bgp_table *table = NULL; | |
9bcb3eef | 5007 | struct bgp_dest *dest = NULL; |
40381db7 | 5008 | struct bgp_path_info *pi; |
342dd0c6 | 5009 | |
053905d2 | 5010 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 5011 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
f106e3a7 | 5012 | /* Only care about "selected" routes. Also ensure that |
5013 | * these are routes that are injectable into EVPN. | |
5014 | */ | |
25f2ca53 | 5015 | /* TODO: Support for AddPath for EVPN. */ |
9bcb3eef | 5016 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 5017 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 5018 | && is_route_injectable_into_evpn(pi)) { |
b54892e0 | 5019 | bgp_evpn_withdraw_type5_route( |
9bcb3eef | 5020 | bgp_vrf, bgp_dest_get_prefix(dest), afi, |
b54892e0 | 5021 | safi); |
25f2ca53 | 5022 | break; |
5023 | } | |
5024 | } | |
5025 | } | |
5424b7ba | 5026 | } |
342dd0c6 | 5027 | |
5fd9c12b KA |
5028 | /* |
5029 | * evpn - enable advertisement of default g/w | |
5030 | */ | |
5031 | void bgp_evpn_install_uninstall_default_route(struct bgp *bgp_vrf, afi_t afi, | |
5032 | safi_t safi, bool add) | |
5033 | { | |
5034 | struct prefix ip_prefix; | |
5035 | ||
5036 | /* form the default prefix 0.0.0.0/0 */ | |
6006b807 | 5037 | memset(&ip_prefix, 0, sizeof(ip_prefix)); |
5fd9c12b KA |
5038 | ip_prefix.family = afi2family(afi); |
5039 | ||
5040 | if (add) { | |
5041 | bgp_evpn_advertise_type5_route(bgp_vrf, &ip_prefix, | |
5042 | NULL, afi, safi); | |
5043 | } else { | |
5044 | bgp_evpn_withdraw_type5_route(bgp_vrf, &ip_prefix, | |
5045 | afi, safi); | |
5046 | } | |
5047 | } | |
5048 | ||
5049 | ||
2f69f6d3 | 5050 | /* |
5051 | * Advertise IP prefix as type-5 route. The afi/safi and src_attr passed | |
5052 | * to this function correspond to those of the source IP prefix (best | |
5053 | * path in the case of the attr. In the case of a local prefix (when we | |
5054 | * are advertising local subnets), the src_attr will be NULL. | |
5055 | */ | |
bd494ec5 | 5056 | void bgp_evpn_advertise_type5_route(struct bgp *bgp_vrf, const struct prefix *p, |
996c9314 LB |
5057 | struct attr *src_attr, afi_t afi, |
5058 | safi_t safi) | |
5424b7ba MK |
5059 | { |
5060 | int ret = 0; | |
5061 | struct prefix_evpn evp; | |
7c82b312 | 5062 | |
31310b25 | 5063 | build_type5_prefix_from_ip_prefix(&evp, p); |
6c995628 | 5064 | ret = update_evpn_type5_route(bgp_vrf, &evp, src_attr, afi, safi); |
2f69f6d3 | 5065 | if (ret) |
e50f7cfd | 5066 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
2dbe669b DA |
5067 | "%u: Failed to create type-5 route for prefix %pFX", |
5068 | bgp_vrf->vrf_id, p); | |
342dd0c6 | 5069 | } |
5070 | ||
2f69f6d3 | 5071 | /* Inject all prefixes of a particular address-family (currently, IPv4 or |
5072 | * IPv6 unicast) into EVPN as type-5 routes. This is invoked when the | |
5073 | * advertisement is enabled. | |
5074 | */ | |
996c9314 LB |
5075 | void bgp_evpn_advertise_type5_routes(struct bgp *bgp_vrf, afi_t afi, |
5076 | safi_t safi) | |
342dd0c6 | 5077 | { |
5078 | struct bgp_table *table = NULL; | |
9bcb3eef | 5079 | struct bgp_dest *dest = NULL; |
40381db7 | 5080 | struct bgp_path_info *pi; |
342dd0c6 | 5081 | |
053905d2 | 5082 | table = bgp_vrf->rib[afi][safi]; |
9bcb3eef | 5083 | for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) { |
2f69f6d3 | 5084 | /* Need to identify the "selected" route entry to use its |
f106e3a7 | 5085 | * attribute. Also, ensure that the route is injectable |
5086 | * into EVPN. | |
2f69f6d3 | 5087 | * TODO: Support for AddPath for EVPN. |
5088 | */ | |
9bcb3eef | 5089 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) { |
40381db7 | 5090 | if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) |
f106e3a7 | 5091 | && is_route_injectable_into_evpn(pi)) { |
53c84f78 MK |
5092 | |
5093 | /* apply the route-map */ | |
5094 | if (bgp_vrf->adv_cmd_rmap[afi][safi].map) { | |
b68885f9 | 5095 | route_map_result_t ret; |
e34291b8 | 5096 | struct bgp_path_info tmp_pi; |
5097 | struct bgp_path_info_extra tmp_pie; | |
5098 | struct attr tmp_attr; | |
5099 | ||
5100 | tmp_attr = *pi->attr; | |
5101 | ||
5102 | /* Fill temp path_info */ | |
9bcb3eef DS |
5103 | prep_for_rmap_apply(&tmp_pi, &tmp_pie, |
5104 | dest, pi, pi->peer, | |
5105 | &tmp_attr); | |
e34291b8 | 5106 | |
5107 | RESET_FLAG(tmp_attr.rmap_change_flags); | |
53c84f78 | 5108 | |
996c9314 LB |
5109 | ret = route_map_apply( |
5110 | bgp_vrf->adv_cmd_rmap[afi][safi] | |
5111 | .map, | |
9bcb3eef | 5112 | bgp_dest_get_prefix(dest), |
1782514f | 5113 | &tmp_pi); |
e34291b8 | 5114 | if (ret == RMAP_DENYMATCH) { |
5115 | bgp_attr_flush(&tmp_attr); | |
53c84f78 | 5116 | continue; |
e34291b8 | 5117 | } |
5118 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 5119 | bgp_vrf, |
9bcb3eef | 5120 | bgp_dest_get_prefix(dest), |
b54892e0 | 5121 | &tmp_attr, afi, safi); |
e34291b8 | 5122 | } else |
5123 | bgp_evpn_advertise_type5_route( | |
b54892e0 | 5124 | bgp_vrf, |
9bcb3eef | 5125 | bgp_dest_get_prefix(dest), |
b54892e0 | 5126 | pi->attr, afi, safi); |
2f69f6d3 | 5127 | break; |
5128 | } | |
5129 | } | |
31310b25 | 5130 | } |
342dd0c6 | 5131 | } |
5132 | ||
ca337b46 SW |
5133 | static void rt_list_remove_node(struct list *rt_list, |
5134 | struct ecommunity *ecomdel, bool is_l3) | |
c581d8b0 | 5135 | { |
ca337b46 SW |
5136 | struct listnode *node = NULL, *nnode = NULL, *node_to_del = NULL; |
5137 | struct vrf_route_target *l3rt = NULL; | |
5138 | struct ecommunity *ecom = NULL; | |
5139 | ||
ca337b46 SW |
5140 | if (is_l3) { |
5141 | for (ALL_LIST_ELEMENTS(rt_list, node, nnode, l3rt)) { | |
5142 | if (ecommunity_match(l3rt->ecom, ecomdel)) { | |
5143 | evpn_vrf_rt_del(l3rt); | |
5144 | node_to_del = node; | |
5145 | break; | |
5146 | } | |
5147 | } | |
5148 | } else { | |
5149 | for (ALL_LIST_ELEMENTS(rt_list, node, nnode, ecom)) { | |
5150 | if (ecommunity_match(ecom, ecomdel)) { | |
5151 | ecommunity_free(&ecom); | |
5152 | node_to_del = node; | |
5153 | break; | |
5154 | } | |
5155 | } | |
5156 | } | |
5157 | ||
58d8948c | 5158 | |
ca337b46 SW |
5159 | if (node_to_del) |
5160 | list_delete_node(rt_list, node_to_del); | |
5161 | } | |
5162 | ||
5163 | void evpn_rt_delete_auto(struct bgp *bgp, vni_t vni, struct list *rtl, | |
5164 | bool is_l3) | |
5165 | { | |
5166 | struct ecommunity *ecom_auto; | |
c581d8b0 MK |
5167 | struct ecommunity_val eval; |
5168 | ||
bf1061d8 VB |
5169 | if (bgp->advertise_autort_rfc8365) |
5170 | vni |= EVPN_AUTORT_VXLAN; | |
58d8948c | 5171 | |
c581d8b0 MK |
5172 | encode_route_target_as((bgp->as & 0xFFFF), vni, &eval); |
5173 | ||
5174 | ecom_auto = ecommunity_new(); | |
1207a5bc | 5175 | ecommunity_add_val(ecom_auto, &eval, false, false); |
c581d8b0 | 5176 | |
ca337b46 | 5177 | rt_list_remove_node(rtl, ecom_auto, is_l3); |
c581d8b0 MK |
5178 | |
5179 | ecommunity_free(&ecom_auto); | |
5180 | } | |
5181 | ||
58d8948c | 5182 | static void evpn_vrf_rt_routes_map(struct bgp *bgp_vrf) |
c581d8b0 | 5183 | { |
58d8948c SW |
5184 | /* map VRFs to its RTs and install routes matching this new RT */ |
5185 | if (is_l3vni_live(bgp_vrf)) { | |
5186 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
5187 | install_routes_for_vrf(bgp_vrf); | |
5188 | } | |
5189 | } | |
ca337b46 | 5190 | |
58d8948c | 5191 | static void evpn_vrf_rt_routes_unmap(struct bgp *bgp_vrf) |
c581d8b0 | 5192 | { |
5ba238b7 | 5193 | /* uninstall routes from vrf */ |
3d0b43d7 | 5194 | if (is_l3vni_live(bgp_vrf)) |
5195 | uninstall_routes_for_vrf(bgp_vrf); | |
10ebe1ab MK |
5196 | |
5197 | /* Cleanup the RT to VRF mapping */ | |
5198 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
58d8948c | 5199 | } |
10ebe1ab | 5200 | |
58d8948c SW |
5201 | static bool rt_list_has_cfgd_rt(struct list *rt_list) |
5202 | { | |
5203 | struct listnode *node = NULL, *nnode = NULL; | |
5204 | struct vrf_route_target *l3rt = NULL; | |
5205 | ||
5206 | for (ALL_LIST_ELEMENTS(rt_list, node, nnode, l3rt)) { | |
5207 | if (!CHECK_FLAG(l3rt->flags, BGP_VRF_RT_AUTO)) | |
5208 | return true; | |
5209 | } | |
5210 | ||
5211 | return false; | |
5212 | } | |
5213 | ||
5214 | static void unconfigure_import_rt_for_vrf_fini(struct bgp *bgp_vrf) | |
5215 | { | |
5216 | if (!bgp_vrf->vrf_import_rtl) | |
5217 | return; /* this should never fail */ | |
5218 | ||
5219 | if (!is_l3vni_live(bgp_vrf)) | |
5220 | return; /* Nothing to do if no vni */ | |
5221 | ||
5222 | /* fall back to auto-generated RT if this was the last RT */ | |
5223 | if (list_isempty(bgp_vrf->vrf_import_rtl)) | |
5224 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
5225 | } | |
5226 | ||
5227 | static void unconfigure_export_rt_for_vrf_fini(struct bgp *bgp_vrf) | |
5228 | { | |
5229 | ||
5230 | if (!bgp_vrf->vrf_export_rtl) | |
5231 | return; /* this should never fail */ | |
5232 | ||
5233 | if (!is_l3vni_live(bgp_vrf)) | |
5234 | return; /* Nothing to do if no vni */ | |
5235 | ||
5236 | /* fall back to auto-generated RT if this was the last RT */ | |
5237 | if (list_isempty(bgp_vrf->vrf_export_rtl)) | |
5238 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
5239 | ||
5240 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
5241 | } | |
5242 | ||
5243 | void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
5244 | struct ecommunity *ecomadd, | |
5245 | bool is_wildcard) | |
5246 | { | |
5247 | struct vrf_route_target *newrt; | |
5248 | ||
5249 | newrt = evpn_vrf_rt_new(ecomadd); | |
5250 | ||
5251 | if (is_wildcard) | |
5252 | SET_FLAG(newrt->flags, BGP_VRF_RT_WILD); | |
5253 | ||
5254 | evpn_vrf_rt_routes_unmap(bgp_vrf); | |
5255 | ||
5256 | /* Remove auto generated RT if not configured */ | |
5257 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_AUTO_RT_CFGD)) | |
5258 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
c581d8b0 MK |
5259 | |
5260 | /* Add the newly configured RT to RT list */ | |
ca337b46 | 5261 | listnode_add_sort(bgp_vrf->vrf_import_rtl, newrt); |
58d8948c | 5262 | |
c581d8b0 MK |
5263 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
5264 | ||
58d8948c SW |
5265 | evpn_vrf_rt_routes_map(bgp_vrf); |
5266 | } | |
5267 | ||
5268 | void bgp_evpn_configure_import_auto_rt_for_vrf(struct bgp *bgp_vrf) | |
5269 | { | |
5270 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_AUTO_RT_CFGD)) | |
5271 | return; /* Already configured */ | |
5272 | ||
5273 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_AUTO_RT_CFGD); | |
5274 | ||
5275 | if (!is_l3vni_live(bgp_vrf)) | |
5276 | return; /* Wait for VNI before adding rts */ | |
5277 | ||
5278 | evpn_vrf_rt_routes_unmap(bgp_vrf); | |
5279 | ||
5280 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); | |
5281 | ||
5282 | evpn_vrf_rt_routes_map(bgp_vrf); | |
c581d8b0 MK |
5283 | } |
5284 | ||
5285 | void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf, | |
5286 | struct ecommunity *ecomdel) | |
5287 | { | |
58d8948c SW |
5288 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
5289 | return; /* Already un-configured */ | |
c581d8b0 | 5290 | |
58d8948c | 5291 | evpn_vrf_rt_routes_unmap(bgp_vrf); |
10ebe1ab | 5292 | |
ca337b46 SW |
5293 | /* Remove rt */ |
5294 | rt_list_remove_node(bgp_vrf->vrf_import_rtl, ecomdel, true); | |
10ebe1ab | 5295 | |
58d8948c | 5296 | if (!rt_list_has_cfgd_rt(bgp_vrf->vrf_import_rtl)) |
c581d8b0 | 5297 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD); |
c581d8b0 | 5298 | |
58d8948c | 5299 | unconfigure_import_rt_for_vrf_fini(bgp_vrf); |
c581d8b0 | 5300 | |
58d8948c SW |
5301 | evpn_vrf_rt_routes_map(bgp_vrf); |
5302 | } | |
c581d8b0 | 5303 | |
58d8948c SW |
5304 | void bgp_evpn_unconfigure_import_auto_rt_for_vrf(struct bgp *bgp_vrf) |
5305 | { | |
5306 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_AUTO_RT_CFGD)) | |
5307 | return; /* Already un-configured */ | |
5308 | ||
5309 | evpn_vrf_rt_routes_unmap(bgp_vrf); | |
5310 | ||
5311 | /* remove auto-generated RT */ | |
5312 | evpn_auto_rt_import_delete_for_vrf(bgp_vrf); | |
5313 | ||
5314 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_AUTO_RT_CFGD); | |
5315 | ||
5316 | unconfigure_import_rt_for_vrf_fini(bgp_vrf); | |
5317 | ||
5318 | evpn_vrf_rt_routes_map(bgp_vrf); | |
c581d8b0 MK |
5319 | } |
5320 | ||
5321 | void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf, | |
5322 | struct ecommunity *ecomadd) | |
5323 | { | |
ca337b46 SW |
5324 | struct vrf_route_target *newrt; |
5325 | ||
5326 | newrt = evpn_vrf_rt_new(ecomadd); | |
5327 | ||
58d8948c SW |
5328 | /* Remove auto generated RT if not configured */ |
5329 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_AUTO_RT_CFGD)) | |
5330 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
c581d8b0 MK |
5331 | |
5332 | /* Add the new RT to the RT list */ | |
ca337b46 | 5333 | listnode_add_sort(bgp_vrf->vrf_export_rtl, newrt); |
58d8948c | 5334 | |
c581d8b0 MK |
5335 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
5336 | ||
ebdc9e64 AD |
5337 | if (is_l3vni_live(bgp_vrf)) |
5338 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
c581d8b0 MK |
5339 | } |
5340 | ||
58d8948c SW |
5341 | void bgp_evpn_configure_export_auto_rt_for_vrf(struct bgp *bgp_vrf) |
5342 | { | |
5343 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_AUTO_RT_CFGD)) | |
5344 | return; /* Already configured */ | |
5345 | ||
5346 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_AUTO_RT_CFGD); | |
5347 | ||
5348 | if (!is_l3vni_live(bgp_vrf)) | |
5349 | return; /* Wait for VNI before adding rts */ | |
5350 | ||
5351 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); | |
5352 | ||
5353 | bgp_evpn_handle_export_rt_change_for_vrf(bgp_vrf); | |
5354 | } | |
5355 | ||
c581d8b0 MK |
5356 | void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf, |
5357 | struct ecommunity *ecomdel) | |
5358 | { | |
58d8948c SW |
5359 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) |
5360 | return; /* Already un-configured */ | |
c581d8b0 | 5361 | |
ca337b46 SW |
5362 | /* Remove rt */ |
5363 | rt_list_remove_node(bgp_vrf->vrf_export_rtl, ecomdel, true); | |
c581d8b0 | 5364 | |
58d8948c | 5365 | if (!rt_list_has_cfgd_rt(bgp_vrf->vrf_export_rtl)) |
c581d8b0 | 5366 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD); |
c581d8b0 | 5367 | |
58d8948c SW |
5368 | unconfigure_export_rt_for_vrf_fini(bgp_vrf); |
5369 | } | |
1525e99f | 5370 | |
58d8948c SW |
5371 | void bgp_evpn_unconfigure_export_auto_rt_for_vrf(struct bgp *bgp_vrf) |
5372 | { | |
5373 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_AUTO_RT_CFGD)) | |
5374 | return; /* Already un-configured */ | |
c581d8b0 | 5375 | |
58d8948c SW |
5376 | /* remove auto-generated RT */ |
5377 | evpn_auto_rt_export_delete_for_vrf(bgp_vrf); | |
5378 | ||
5379 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_AUTO_RT_CFGD); | |
5380 | ||
5381 | unconfigure_export_rt_for_vrf_fini(bgp_vrf); | |
c581d8b0 MK |
5382 | } |
5383 | ||
2d48ee25 | 5384 | /* |
5385 | * Handle change to BGP router id. This is invoked twice by the change | |
5386 | * handler, first before the router id has been changed and then after | |
5387 | * the router id has been changed. The first invocation will result in | |
676f83b9 | 5388 | * local routes for all VNIs/VRF being deleted and withdrawn and the next |
2d48ee25 | 5389 | * will result in the routes being re-advertised. |
5390 | */ | |
d62a17ae | 5391 | void bgp_evpn_handle_router_id_update(struct bgp *bgp, int withdraw) |
2d48ee25 | 5392 | { |
5394a276 CS |
5393 | struct listnode *node; |
5394 | struct bgp *bgp_vrf; | |
5395 | ||
676f83b9 | 5396 | if (withdraw) { |
5397 | ||
5398 | /* delete and withdraw all the type-5 routes | |
523cafc4 | 5399 | stored in the global table for this vrf |
5400 | */ | |
80b140af | 5401 | withdraw_router_id_vrf(bgp); |
676f83b9 | 5402 | |
5403 | /* delete all the VNI routes (type-2/type-3) routes for all the | |
523cafc4 | 5404 | * L2-VNIs |
5405 | */ | |
d62a17ae | 5406 | hash_iterate(bgp->vnihash, |
e3b78da8 | 5407 | (void (*)(struct hash_bucket *, |
d62a17ae | 5408 | void *))withdraw_router_id_vni, |
5409 | bgp); | |
5394a276 CS |
5410 | |
5411 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
5412 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
5413 | if (bgp_vrf->evpn_info->advertise_pip && | |
5414 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
5415 | == INADDR_ANY)) | |
5416 | bgp_vrf->evpn_info->pip_ip.s_addr | |
5417 | = INADDR_ANY; | |
5418 | } | |
5419 | } | |
676f83b9 | 5420 | } else { |
5421 | ||
5394a276 CS |
5422 | /* Assign new default instance router-id */ |
5423 | if (bgp->inst_type == BGP_INSTANCE_TYPE_DEFAULT) { | |
5424 | for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) { | |
5425 | if (bgp_vrf->evpn_info->advertise_pip && | |
5426 | (bgp_vrf->evpn_info->pip_ip_static.s_addr | |
5427 | == INADDR_ANY)) { | |
5428 | bgp_vrf->evpn_info->pip_ip = | |
5429 | bgp->router_id; | |
5430 | /* advertise type-5 routes with | |
5431 | * new nexthop | |
5432 | */ | |
5433 | update_advertise_vrf_routes(bgp_vrf); | |
5434 | } | |
5435 | } | |
5436 | } | |
5437 | ||
676f83b9 | 5438 | /* advertise all routes in the vrf as type-5 routes with the new |
523cafc4 | 5439 | * RD |
5440 | */ | |
80b140af | 5441 | update_router_id_vrf(bgp); |
676f83b9 | 5442 | |
5443 | /* advertise all the VNI routes (type-2/type-3) routes with the | |
523cafc4 | 5444 | * new RD |
5445 | */ | |
d62a17ae | 5446 | hash_iterate(bgp->vnihash, |
e3b78da8 | 5447 | (void (*)(struct hash_bucket *, |
d62a17ae | 5448 | void *))update_router_id_vni, |
5449 | bgp); | |
676f83b9 | 5450 | } |
2d48ee25 | 5451 | } |
5452 | ||
bf1061d8 VB |
5453 | /* |
5454 | * Handle change to auto-RT algorithm - update and advertise local routes. | |
5455 | */ | |
5456 | void bgp_evpn_handle_autort_change(struct bgp *bgp) | |
5457 | { | |
5458 | hash_iterate(bgp->vnihash, | |
e3b78da8 | 5459 | (void (*)(struct hash_bucket *, |
bf1061d8 VB |
5460 | void*))update_autort_vni, |
5461 | bgp); | |
4204021e PG |
5462 | if (bgp->l3vni) |
5463 | update_autort_l3vni(bgp); | |
bf1061d8 VB |
5464 | } |
5465 | ||
90e60aa7 | 5466 | /* |
5467 | * Handle change to export RT - update and advertise local routes. | |
5468 | */ | |
d62a17ae | 5469 | int bgp_evpn_handle_export_rt_change(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 5470 | { |
d62a17ae | 5471 | return update_routes_for_vni(bgp, vpn); |
90e60aa7 | 5472 | } |
5473 | ||
996c9314 | 5474 | void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw) |
676f83b9 | 5475 | { |
5476 | if (withdraw) | |
5477 | delete_withdraw_vrf_routes(bgp_vrf); | |
5478 | else | |
5479 | update_advertise_vrf_routes(bgp_vrf); | |
5480 | } | |
5481 | ||
90e60aa7 | 5482 | /* |
5483 | * Handle change to RD. This is invoked twice by the change handler, | |
5484 | * first before the RD has been changed and then after the RD has | |
5485 | * been changed. The first invocation will result in local routes | |
5486 | * of this VNI being deleted and withdrawn and the next will result | |
5487 | * in the routes being re-advertised. | |
5488 | */ | |
d62a17ae | 5489 | void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn, |
5490 | int withdraw) | |
90e60aa7 | 5491 | { |
d62a17ae | 5492 | if (withdraw) |
5493 | delete_withdraw_vni_routes(bgp, vpn); | |
5494 | else | |
5495 | update_advertise_vni_routes(bgp, vpn); | |
90e60aa7 | 5496 | } |
5497 | ||
5498 | /* | |
5499 | * Install routes for this VNI. Invoked upon change to Import RT. | |
5500 | */ | |
d62a17ae | 5501 | int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 5502 | { |
d62a17ae | 5503 | return install_routes_for_vni(bgp, vpn); |
90e60aa7 | 5504 | } |
5505 | ||
5506 | /* | |
5507 | * Uninstall all routes installed for this VNI. Invoked upon change | |
5508 | * to Import RT. | |
5509 | */ | |
d62a17ae | 5510 | int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn) |
90e60aa7 | 5511 | { |
d62a17ae | 5512 | return uninstall_routes_for_vni(bgp, vpn); |
90e60aa7 | 5513 | } |
5514 | ||
b16031a2 | 5515 | /* |
b57ba6d2 | 5516 | * TODO: Hardcoded for a maximum of 2 VNIs right now |
b16031a2 | 5517 | */ |
d7c0a89a | 5518 | char *bgp_evpn_label2str(mpls_label_t *label, uint32_t num_labels, char *buf, |
996c9314 | 5519 | int len) |
b16031a2 | 5520 | { |
b57ba6d2 | 5521 | vni_t vni1, vni2; |
b16031a2 | 5522 | |
b57ba6d2 MK |
5523 | vni1 = label2vni(label); |
5524 | if (num_labels == 2) { | |
996c9314 | 5525 | vni2 = label2vni(label + 1); |
b57ba6d2 MK |
5526 | snprintf(buf, len, "%u/%u", vni1, vni2); |
5527 | } else | |
5528 | snprintf(buf, len, "%u", vni1); | |
d62a17ae | 5529 | return buf; |
b16031a2 | 5530 | } |
5531 | ||
9c92b5f7 MK |
5532 | /* |
5533 | * Function to convert evpn route to json format. | |
5534 | * NOTE: We don't use prefix2str as the output here is a bit different. | |
5535 | */ | |
bd494ec5 | 5536 | void bgp_evpn_route2json(const struct prefix_evpn *p, json_object *json) |
9c92b5f7 | 5537 | { |
b682f6de | 5538 | char buf1[ETHER_ADDR_STRLEN]; |
5539 | char buf2[PREFIX2STR_BUFFER]; | |
44c69747 LK |
5540 | uint8_t family; |
5541 | uint8_t prefixlen; | |
9c92b5f7 | 5542 | |
b682f6de | 5543 | if (!json) |
5544 | return; | |
9c92b5f7 | 5545 | |
44c69747 LK |
5546 | json_object_int_add(json, "routeType", p->prefix.route_type); |
5547 | ||
5548 | switch (p->prefix.route_type) { | |
5549 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 5550 | json_object_int_add(json, "ethTag", |
44c69747 LK |
5551 | p->prefix.macip_addr.eth_tag); |
5552 | json_object_int_add(json, "macLen", 8 * ETH_ALEN); | |
5553 | json_object_string_add(json, "mac", | |
5554 | prefix_mac2str(&p->prefix.macip_addr.mac, buf1, | |
5555 | sizeof(buf1))); | |
5556 | ||
5557 | if (!is_evpn_prefix_ipaddr_none(p)) { | |
5558 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : | |
5559 | AF_INET6; | |
5560 | prefixlen = (family == AF_INET) ? | |
5561 | IPV4_MAX_BITLEN : IPV6_MAX_BITLEN; | |
5562 | inet_ntop(family, &p->prefix.macip_addr.ip.ip.addr, | |
5563 | buf2, PREFIX2STR_BUFFER); | |
5564 | json_object_int_add(json, "ipLen", prefixlen); | |
5565 | json_object_string_add(json, "ip", buf2); | |
5566 | } | |
5567 | break; | |
dff8f48d | 5568 | |
44c69747 LK |
5569 | case BGP_EVPN_IMET_ROUTE: |
5570 | json_object_int_add(json, "ethTag", | |
5571 | p->prefix.imet_addr.eth_tag); | |
5572 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
5573 | prefixlen = (family == AF_INET) ? IPV4_MAX_BITLEN : | |
5574 | IPV6_MAX_BITLEN; | |
5575 | inet_ntop(family, &p->prefix.imet_addr.ip.ip.addr, buf2, | |
5576 | PREFIX2STR_BUFFER); | |
5577 | json_object_int_add(json, "ipLen", prefixlen); | |
5578 | json_object_string_add(json, "ip", buf2); | |
5579 | break; | |
dff8f48d | 5580 | |
44c69747 LK |
5581 | case BGP_EVPN_IP_PREFIX_ROUTE: |
5582 | json_object_int_add(json, "ethTag", | |
5583 | p->prefix.prefix_addr.eth_tag); | |
5584 | family = is_evpn_prefix_ipaddr_v4(p) ? AF_INET : AF_INET6; | |
5585 | inet_ntop(family, &p->prefix.prefix_addr.ip.ip.addr, | |
5586 | buf2, sizeof(buf2)); | |
5587 | json_object_int_add(json, "ipLen", | |
5588 | p->prefix.prefix_addr.ip_prefix_length); | |
5589 | json_object_string_add(json, "ip", buf2); | |
5590 | break; | |
5591 | ||
5592 | default: | |
5593 | break; | |
dff8f48d | 5594 | } |
9c92b5f7 MK |
5595 | } |
5596 | ||
128ea8ab | 5597 | /* |
5598 | * Encode EVPN prefix in Update (MP_REACH) | |
5599 | */ | |
5f040085 DS |
5600 | void bgp_evpn_encode_prefix(struct stream *s, const struct prefix *p, |
5601 | const struct prefix_rd *prd, mpls_label_t *label, | |
d7c0a89a | 5602 | uint32_t num_labels, struct attr *attr, |
be92fc9f | 5603 | bool addpath_capable, uint32_t addpath_tx_id) |
d62a17ae | 5604 | { |
5605 | struct prefix_evpn *evp = (struct prefix_evpn *)p; | |
b57ba6d2 | 5606 | int len, ipa_len = 0; |
d62a17ae | 5607 | |
be92fc9f | 5608 | if (addpath_capable) |
d62a17ae | 5609 | stream_putl(s, addpath_tx_id); |
5610 | ||
5611 | /* Route type */ | |
5612 | stream_putc(s, evp->prefix.route_type); | |
5613 | ||
5614 | switch (evp->prefix.route_type) { | |
5615 | case BGP_EVPN_MAC_IP_ROUTE: | |
3714a385 | 5616 | if (is_evpn_prefix_ipaddr_v4(evp)) |
d62a17ae | 5617 | ipa_len = IPV4_MAX_BYTELEN; |
3714a385 | 5618 | else if (is_evpn_prefix_ipaddr_v6(evp)) |
d62a17ae | 5619 | ipa_len = IPV6_MAX_BYTELEN; |
b57ba6d2 MK |
5620 | /* RD, ESI, EthTag, MAC+len, IP len, [IP], 1 VNI */ |
5621 | len = 8 + 10 + 4 + 1 + 6 + 1 + ipa_len + 3; | |
5622 | if (ipa_len && num_labels > 1) /* There are 2 VNIs */ | |
5623 | len += 3; | |
5624 | stream_putc(s, len); | |
996c9314 | 5625 | stream_put(s, prd->val, 8); /* RD */ |
554cd77a | 5626 | if (attr) |
c44ab6f1 | 5627 | stream_put(s, &attr->esi, ESI_BYTES); |
554cd77a VB |
5628 | else |
5629 | stream_put(s, 0, 10); | |
3714a385 | 5630 | stream_putl(s, evp->prefix.macip_addr.eth_tag); /* Ethernet Tag ID */ |
28328ea9 | 5631 | stream_putc(s, 8 * ETH_ALEN); /* Mac Addr Len - bits */ |
3714a385 | 5632 | stream_put(s, evp->prefix.macip_addr.mac.octet, 6); /* Mac Addr */ |
5633 | stream_putc(s, 8 * ipa_len); /* IP address Length */ | |
5634 | if (ipa_len) /* IP */ | |
5635 | stream_put(s, &evp->prefix.macip_addr.ip.ip.addr, | |
5636 | ipa_len); | |
b57ba6d2 MK |
5637 | /* 1st label is the L2 VNI */ |
5638 | stream_put(s, label, BGP_LABEL_BYTES); | |
5639 | /* Include 2nd label (L3 VNI) if advertising MAC+IP */ | |
5640 | if (ipa_len && num_labels > 1) | |
996c9314 | 5641 | stream_put(s, label + 1, BGP_LABEL_BYTES); |
d62a17ae | 5642 | break; |
5643 | ||
5644 | case BGP_EVPN_IMET_ROUTE: | |
5645 | stream_putc(s, 17); // TODO: length - assumes IPv4 address | |
5646 | stream_put(s, prd->val, 8); /* RD */ | |
3714a385 | 5647 | stream_putl(s, evp->prefix.imet_addr.eth_tag); /* Ethernet Tag ID */ |
d62a17ae | 5648 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ |
5649 | /* Originating Router's IP Addr */ | |
3714a385 | 5650 | stream_put_in_addr(s, &evp->prefix.imet_addr.ip.ipaddr_v4); |
d62a17ae | 5651 | break; |
5652 | ||
50f74cf1 | 5653 | case BGP_EVPN_ES_ROUTE: |
5654 | stream_putc(s, 23); /* TODO: length: assumes ipv4 VTEP */ | |
5655 | stream_put(s, prd->val, 8); /* RD */ | |
5656 | stream_put(s, evp->prefix.es_addr.esi.val, 10); /* ESI */ | |
5657 | stream_putc(s, IPV4_MAX_BITLEN); /* IP address Length - bits */ | |
2bb9eff4 DS |
5658 | /* VTEP IP */ |
5659 | stream_put_in_addr(s, &evp->prefix.es_addr.ip.ipaddr_v4); | |
50f74cf1 | 5660 | break; |
5661 | ||
c44ab6f1 AK |
5662 | case BGP_EVPN_AD_ROUTE: |
5663 | /* RD, ESI, EthTag, 1 VNI */ | |
5664 | len = RD_BYTES + ESI_BYTES + EVPN_ETH_TAG_BYTES + BGP_LABEL_BYTES; | |
5665 | stream_putc(s, len); | |
5666 | stream_put(s, prd->val, RD_BYTES); /* RD */ | |
5667 | stream_put(s, evp->prefix.ead_addr.esi.val, ESI_BYTES); /* ESI */ | |
5668 | stream_putl(s, evp->prefix.ead_addr.eth_tag); /* Ethernet Tag */ | |
5669 | stream_put(s, label, BGP_LABEL_BYTES); | |
5670 | break; | |
5671 | ||
d62a17ae | 5672 | case BGP_EVPN_IP_PREFIX_ROUTE: |
5673 | /* TODO: AddPath support. */ | |
b57ba6d2 | 5674 | evpn_mpattr_encode_type5(s, p, prd, label, num_labels, attr); |
d62a17ae | 5675 | break; |
5676 | ||
5677 | default: | |
5678 | break; | |
5679 | } | |
5680 | } | |
5681 | ||
5682 | int bgp_nlri_parse_evpn(struct peer *peer, struct attr *attr, | |
5683 | struct bgp_nlri *packet, int withdraw) | |
5684 | { | |
d7c0a89a QY |
5685 | uint8_t *pnt; |
5686 | uint8_t *lim; | |
d62a17ae | 5687 | afi_t afi; |
5688 | safi_t safi; | |
d7c0a89a | 5689 | uint32_t addpath_id; |
be92fc9f | 5690 | bool addpath_capable; |
d62a17ae | 5691 | int psize = 0; |
d7c0a89a | 5692 | uint8_t rtype; |
d62a17ae | 5693 | struct prefix p; |
5694 | ||
d62a17ae | 5695 | /* Start processing the NLRI - there may be multiple in the MP_REACH */ |
5696 | pnt = packet->nlri; | |
5697 | lim = pnt + packet->length; | |
5698 | afi = packet->afi; | |
5699 | safi = packet->safi; | |
5700 | addpath_id = 0; | |
5701 | ||
be92fc9f | 5702 | addpath_capable = bgp_addpath_encode_rx(peer, afi, safi); |
d62a17ae | 5703 | |
5704 | for (; pnt < lim; pnt += psize) { | |
5705 | /* Clear prefix structure. */ | |
6006b807 | 5706 | memset(&p, 0, sizeof(p)); |
d62a17ae | 5707 | |
5708 | /* Deal with path-id if AddPath is supported. */ | |
be92fc9f | 5709 | if (addpath_capable) { |
d62a17ae | 5710 | /* When packet overflow occurs return immediately. */ |
5711 | if (pnt + BGP_ADDPATH_ID_LEN > lim) | |
513386b5 | 5712 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 5713 | |
a3a850a1 S |
5714 | memcpy(&addpath_id, pnt, BGP_ADDPATH_ID_LEN); |
5715 | addpath_id = ntohl(addpath_id); | |
d62a17ae | 5716 | pnt += BGP_ADDPATH_ID_LEN; |
5717 | } | |
5718 | ||
5719 | /* All EVPN NLRI types start with type and length. */ | |
5720 | if (pnt + 2 > lim) | |
513386b5 | 5721 | return BGP_NLRI_PARSE_ERROR_EVPN_MISSING_TYPE; |
d62a17ae | 5722 | |
5723 | rtype = *pnt++; | |
3f54c705 | 5724 | psize = *pnt++; |
d62a17ae | 5725 | |
5726 | /* When packet overflow occur return immediately. */ | |
5727 | if (pnt + psize > lim) | |
513386b5 | 5728 | return BGP_NLRI_PARSE_ERROR_PACKET_OVERFLOW; |
d62a17ae | 5729 | |
5730 | switch (rtype) { | |
5731 | case BGP_EVPN_MAC_IP_ROUTE: | |
5732 | if (process_type2_route(peer, afi, safi, | |
5733 | withdraw ? NULL : attr, pnt, | |
5734 | psize, addpath_id)) { | |
af4c2728 | 5735 | flog_err( |
e50f7cfd | 5736 | EC_BGP_EVPN_FAIL, |
d62a17ae | 5737 | "%u:%s - Error in processing EVPN type-2 NLRI size %d", |
5738 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5739 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE2_SIZE; |
d62a17ae | 5740 | } |
5741 | break; | |
5742 | ||
5743 | case BGP_EVPN_IMET_ROUTE: | |
5744 | if (process_type3_route(peer, afi, safi, | |
5745 | withdraw ? NULL : attr, pnt, | |
5746 | psize, addpath_id)) { | |
af4c2728 | 5747 | flog_err( |
e50f7cfd | 5748 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5749 | "%u:%s - Error in processing EVPN type-3 NLRI size %d", |
5750 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5751 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE3_SIZE; |
d62a17ae | 5752 | } |
5753 | break; | |
5754 | ||
50f74cf1 | 5755 | case BGP_EVPN_ES_ROUTE: |
c44ab6f1 | 5756 | if (bgp_evpn_type4_route_process(peer, afi, safi, |
50f74cf1 | 5757 | withdraw ? NULL : attr, pnt, |
5758 | psize, addpath_id)) { | |
af4c2728 | 5759 | flog_err( |
e50f7cfd | 5760 | EC_BGP_PKT_PROCESS, |
50f74cf1 | 5761 | "%u:%s - Error in processing EVPN type-4 NLRI size %d", |
5762 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5763 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE4_SIZE; |
50f74cf1 | 5764 | } |
5765 | break; | |
5766 | ||
c44ab6f1 AK |
5767 | case BGP_EVPN_AD_ROUTE: |
5768 | if (bgp_evpn_type1_route_process(peer, afi, safi, | |
5769 | withdraw ? NULL : attr, pnt, | |
5770 | psize, addpath_id)) { | |
5771 | flog_err( | |
5772 | EC_BGP_PKT_PROCESS, | |
5773 | "%u:%s - Error in processing EVPN type-1 NLRI size %d", | |
5774 | peer->bgp->vrf_id, peer->host, psize); | |
5775 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE1_SIZE; | |
5776 | } | |
5777 | break; | |
5778 | ||
d62a17ae | 5779 | case BGP_EVPN_IP_PREFIX_ROUTE: |
f007bdce CS |
5780 | if (process_type5_route(peer, afi, safi, |
5781 | withdraw ? NULL : attr, pnt, | |
5782 | psize, addpath_id)) { | |
af4c2728 | 5783 | flog_err( |
e50f7cfd | 5784 | EC_BGP_PKT_PROCESS, |
d62a17ae | 5785 | "%u:%s - Error in processing EVPN type-5 NLRI size %d", |
5786 | peer->bgp->vrf_id, peer->host, psize); | |
513386b5 | 5787 | return BGP_NLRI_PARSE_ERROR_EVPN_TYPE5_SIZE; |
d62a17ae | 5788 | } |
5789 | break; | |
5790 | ||
5791 | default: | |
5792 | break; | |
5793 | } | |
5794 | } | |
5795 | ||
5796 | /* Packet length consistency check. */ | |
5797 | if (pnt != lim) | |
513386b5 | 5798 | return BGP_NLRI_PARSE_ERROR_PACKET_LENGTH; |
d62a17ae | 5799 | |
513386b5 | 5800 | return BGP_NLRI_PARSE_OK; |
128ea8ab | 5801 | } |
5802 | ||
10ebe1ab MK |
5803 | /* |
5804 | * Map the RTs (configured or automatically derived) of a VRF to the VRF. | |
5805 | * The mapping will be used during route processing. | |
10ebe1ab MK |
5806 | * bgp_vrf: specific bgp vrf instance on which RT is configured |
5807 | */ | |
5808 | void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf) | |
5809 | { | |
58d8948c | 5810 | struct listnode *node, *nnode; |
ca337b46 | 5811 | struct vrf_route_target *l3rt; |
10ebe1ab | 5812 | |
58d8948c SW |
5813 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, l3rt)) |
5814 | map_vrf_to_rt(bgp_vrf, l3rt); | |
10ebe1ab MK |
5815 | } |
5816 | ||
5817 | /* | |
5818 | * Unmap the RTs (configured or automatically derived) of a VRF from the VRF. | |
5819 | */ | |
5820 | void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf) | |
5821 | { | |
10ebe1ab | 5822 | struct listnode *node, *nnode; |
ca337b46 | 5823 | struct vrf_route_target *l3rt; |
10ebe1ab | 5824 | |
58d8948c SW |
5825 | for (ALL_LIST_ELEMENTS(bgp_vrf->vrf_import_rtl, node, nnode, l3rt)) |
5826 | unmap_vrf_from_rt(bgp_vrf, l3rt); | |
10ebe1ab MK |
5827 | } |
5828 | ||
128ea8ab | 5829 | /* |
5830 | * Map the RTs (configured or automatically derived) of a VNI to the VNI. | |
5831 | * The mapping will be used during route processing. | |
5832 | */ | |
d62a17ae | 5833 | void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5834 | { |
f6e07e1b | 5835 | uint32_t i; |
d62a17ae | 5836 | struct ecommunity_val *eval; |
5837 | struct listnode *node, *nnode; | |
5838 | struct ecommunity *ecom; | |
128ea8ab | 5839 | |
d62a17ae | 5840 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5841 | for (i = 0; i < ecom->size; i++) { | |
5842 | eval = (struct ecommunity_val *)(ecom->val | |
5843 | + (i | |
5844 | * ECOMMUNITY_SIZE)); | |
5845 | map_vni_to_rt(bgp, vpn, eval); | |
5846 | } | |
5847 | } | |
128ea8ab | 5848 | } |
5849 | ||
5850 | /* | |
5851 | * Unmap the RTs (configured or automatically derived) of a VNI from the VNI. | |
5852 | */ | |
d62a17ae | 5853 | void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5854 | { |
f6e07e1b | 5855 | uint32_t i; |
d62a17ae | 5856 | struct ecommunity_val *eval; |
5857 | struct listnode *node, *nnode; | |
5858 | struct ecommunity *ecom; | |
128ea8ab | 5859 | |
d62a17ae | 5860 | for (ALL_LIST_ELEMENTS(vpn->import_rtl, node, nnode, ecom)) { |
5861 | for (i = 0; i < ecom->size; i++) { | |
5862 | struct irt_node *irt; | |
5863 | struct ecommunity_val eval_tmp; | |
128ea8ab | 5864 | |
d62a17ae | 5865 | eval = (struct ecommunity_val *)(ecom->val |
5866 | + (i | |
5867 | * ECOMMUNITY_SIZE)); | |
5868 | /* If using "automatic" RT, we only care about the | |
5869 | * local-admin sub-field. | |
5870 | * This is to facilitate using VNI as the RT for EBGP | |
5871 | * peering too. | |
5872 | */ | |
5873 | memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE); | |
5874 | if (!is_import_rt_configured(vpn)) | |
5875 | mask_ecom_global_admin(&eval_tmp, eval); | |
128ea8ab | 5876 | |
d62a17ae | 5877 | irt = lookup_import_rt(bgp, &eval_tmp); |
5878 | if (irt) | |
5879 | unmap_vni_from_rt(bgp, vpn, irt); | |
5880 | } | |
5881 | } | |
128ea8ab | 5882 | } |
5883 | ||
5884 | /* | |
5885 | * Derive Import RT automatically for VNI and map VNI to RT. | |
5886 | * The mapping will be used during route processing. | |
5887 | */ | |
d62a17ae | 5888 | void bgp_evpn_derive_auto_rt_import(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5889 | { |
58d8948c | 5890 | form_auto_rt(bgp, vpn->vni, vpn->import_rtl, false); |
d62a17ae | 5891 | UNSET_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD); |
128ea8ab | 5892 | |
d62a17ae | 5893 | /* Map RT to VNI */ |
5894 | bgp_evpn_map_vni_to_its_rts(bgp, vpn); | |
128ea8ab | 5895 | } |
5896 | ||
5897 | /* | |
5898 | * Derive Export RT automatically for VNI. | |
5899 | */ | |
d62a17ae | 5900 | void bgp_evpn_derive_auto_rt_export(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5901 | { |
58d8948c | 5902 | form_auto_rt(bgp, vpn->vni, vpn->export_rtl, false); |
d62a17ae | 5903 | UNSET_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD); |
128ea8ab | 5904 | } |
5905 | ||
676f83b9 | 5906 | /* |
5907 | * Derive RD automatically for VNI using passed information - it | |
5908 | * is of the form RouterId:unique-id-for-vni. | |
5909 | */ | |
5910 | void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp) | |
5911 | { | |
9e97ff03 CS |
5912 | if (is_vrf_rd_configured(bgp)) |
5913 | return; | |
5914 | ||
92708db6 | 5915 | form_auto_rd(bgp->router_id, bgp->vrf_rd_id, &bgp->vrf_prd); |
676f83b9 | 5916 | } |
5917 | ||
128ea8ab | 5918 | /* |
5919 | * Derive RD automatically for VNI using passed information - it | |
5920 | * is of the form RouterId:unique-id-for-vni. | |
5921 | */ | |
d62a17ae | 5922 | void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 5923 | { |
c44ab6f1 | 5924 | char buf[BGP_EVPN_PREFIX_RD_LEN]; |
128ea8ab | 5925 | |
d62a17ae | 5926 | vpn->prd.family = AF_UNSPEC; |
5927 | vpn->prd.prefixlen = 64; | |
23d0a753 | 5928 | snprintfrr(buf, sizeof(buf), "%pI4:%hu", &bgp->router_id, vpn->rd_id); |
cbb65f5e | 5929 | (void)str2prefix_rd(buf, &vpn->prd); |
d62a17ae | 5930 | UNSET_FLAG(vpn->flags, VNI_FLAG_RD_CFGD); |
128ea8ab | 5931 | } |
5932 | ||
7df407ed CS |
5933 | /* |
5934 | * Lookup L3-VNI | |
5935 | */ | |
5936 | bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni) | |
5937 | { | |
5938 | struct list *inst = bm->bgp; | |
5939 | struct listnode *node; | |
5940 | struct bgp *bgp_vrf; | |
5941 | ||
5942 | for (ALL_LIST_ELEMENTS_RO(inst, node, bgp_vrf)) { | |
5943 | if (bgp_vrf->l3vni == vni) | |
5944 | return true; | |
5945 | } | |
5946 | ||
5947 | return false; | |
5948 | } | |
5949 | ||
128ea8ab | 5950 | /* |
5951 | * Lookup VNI. | |
5952 | */ | |
d62a17ae | 5953 | struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni) |
128ea8ab | 5954 | { |
d62a17ae | 5955 | struct bgpevpn *vpn; |
5956 | struct bgpevpn tmp; | |
128ea8ab | 5957 | |
6006b807 | 5958 | memset(&tmp, 0, sizeof(tmp)); |
d62a17ae | 5959 | tmp.vni = vni; |
5960 | vpn = hash_lookup(bgp->vnihash, &tmp); | |
5961 | return vpn; | |
128ea8ab | 5962 | } |
5963 | ||
5964 | /* | |
5965 | * Create a new vpn - invoked upon configuration or zebra notification. | |
5966 | */ | |
d62a17ae | 5967 | struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
5968 | struct in_addr originator_ip, |
5969 | vrf_id_t tenant_vrf_id, | |
9daa5d47 AD |
5970 | struct in_addr mcast_grp, |
5971 | ifindex_t svi_ifindex) | |
128ea8ab | 5972 | { |
d62a17ae | 5973 | struct bgpevpn *vpn; |
128ea8ab | 5974 | |
d62a17ae | 5975 | vpn = XCALLOC(MTYPE_BGP_EVPN, sizeof(struct bgpevpn)); |
128ea8ab | 5976 | |
d62a17ae | 5977 | /* Set values - RD and RT set to defaults. */ |
5978 | vpn->vni = vni; | |
5979 | vpn->originator_ip = originator_ip; | |
29c53922 | 5980 | vpn->tenant_vrf_id = tenant_vrf_id; |
76d07c7a | 5981 | vpn->mcast_grp = mcast_grp; |
9daa5d47 | 5982 | vpn->svi_ifindex = svi_ifindex; |
128ea8ab | 5983 | |
d62a17ae | 5984 | /* Initialize route-target import and export lists */ |
5985 | vpn->import_rtl = list_new(); | |
f4a5218d AK |
5986 | vpn->import_rtl->cmp = |
5987 | (int (*)(void *, void *))bgp_evpn_route_target_cmp; | |
5988 | vpn->import_rtl->del = bgp_evpn_xxport_delete_ecomm; | |
d62a17ae | 5989 | vpn->export_rtl = list_new(); |
f4a5218d AK |
5990 | vpn->export_rtl->cmp = |
5991 | (int (*)(void *, void *))bgp_evpn_route_target_cmp; | |
5992 | vpn->export_rtl->del = bgp_evpn_xxport_delete_ecomm; | |
e9eb5f63 | 5993 | bf_assign_index(bm->rd_idspace, vpn->rd_id); |
d62a17ae | 5994 | derive_rd_rt_for_vni(bgp, vpn); |
128ea8ab | 5995 | |
852d9f97 SW |
5996 | /* Initialize EVPN route tables. */ |
5997 | vpn->ip_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); | |
5998 | vpn->mac_table = bgp_table_init(bgp, AFI_L2VPN, SAFI_EVPN); | |
128ea8ab | 5999 | |
d62a17ae | 6000 | /* Add to hash */ |
ac390ef8 | 6001 | (void)hash_get(bgp->vnihash, vpn, hash_alloc_intern); |
6a8657d0 | 6002 | |
021b6596 AD |
6003 | bgp_evpn_remote_ip_hash_init(vpn); |
6004 | bgp_evpn_link_to_vni_svi_hash(bgp, vpn); | |
6005 | ||
6a8657d0 MK |
6006 | /* add to l2vni list on corresponding vrf */ |
6007 | bgpevpn_link_to_l3vni(vpn); | |
6008 | ||
c44ab6f1 AK |
6009 | bgp_evpn_vni_es_init(vpn); |
6010 | ||
d62a17ae | 6011 | QOBJ_REG(vpn, bgpevpn); |
6012 | return vpn; | |
128ea8ab | 6013 | } |
6014 | ||
6015 | /* | |
6016 | * Free a given VPN - called in multiple scenarios such as zebra | |
6017 | * notification, configuration being deleted, advertise-all-vni disabled etc. | |
6018 | * This just frees appropriate memory, caller should have taken other | |
6019 | * needed actions. | |
6020 | */ | |
d62a17ae | 6021 | void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn) |
128ea8ab | 6022 | { |
021b6596 | 6023 | bgp_evpn_remote_ip_hash_destroy(vpn); |
c44ab6f1 | 6024 | bgp_evpn_vni_es_cleanup(vpn); |
6a8657d0 | 6025 | bgpevpn_unlink_from_l3vni(vpn); |
852d9f97 SW |
6026 | bgp_table_unlock(vpn->ip_table); |
6027 | bgp_table_unlock(vpn->mac_table); | |
d62a17ae | 6028 | bgp_evpn_unmap_vni_from_its_rts(bgp, vpn); |
6a154c88 DL |
6029 | list_delete(&vpn->import_rtl); |
6030 | list_delete(&vpn->export_rtl); | |
e9eb5f63 | 6031 | bf_release_index(bm->rd_idspace, vpn->rd_id); |
021b6596 | 6032 | hash_release(bgp->vni_svi_hash, vpn); |
d62a17ae | 6033 | hash_release(bgp->vnihash, vpn); |
6034 | QOBJ_UNREG(vpn); | |
6035 | XFREE(MTYPE_BGP_EVPN, vpn); | |
128ea8ab | 6036 | } |
6037 | ||
3727e359 DA |
6038 | static void hash_evpn_free(struct bgpevpn *vpn) |
6039 | { | |
6040 | XFREE(MTYPE_BGP_EVPN, vpn); | |
6041 | } | |
6042 | ||
50f74cf1 | 6043 | /* |
6044 | * Import evpn route from global table to VNI/VRF/ESI. | |
128ea8ab | 6045 | */ |
d62a17ae | 6046 | int bgp_evpn_import_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 6047 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 6048 | { |
40381db7 | 6049 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 1); |
128ea8ab | 6050 | } |
6051 | ||
6052 | /* | |
50f74cf1 | 6053 | * Unimport evpn route from VNI/VRF/ESI. |
128ea8ab | 6054 | */ |
d62a17ae | 6055 | int bgp_evpn_unimport_route(struct bgp *bgp, afi_t afi, safi_t safi, |
5a1ae2c2 | 6056 | const struct prefix *p, struct bgp_path_info *pi) |
128ea8ab | 6057 | { |
40381db7 | 6058 | return install_uninstall_evpn_route(bgp, afi, safi, p, pi, 0); |
128ea8ab | 6059 | } |
6060 | ||
db0e1937 MK |
6061 | /* filter routes which have martian next hops */ |
6062 | int bgp_filter_evpn_routes_upon_martian_nh_change(struct bgp *bgp) | |
6063 | { | |
0291c246 MK |
6064 | afi_t afi; |
6065 | safi_t safi; | |
9bcb3eef | 6066 | struct bgp_dest *rd_dest, *dest; |
0291c246 | 6067 | struct bgp_table *table; |
40381db7 | 6068 | struct bgp_path_info *pi; |
db0e1937 MK |
6069 | |
6070 | afi = AFI_L2VPN; | |
6071 | safi = SAFI_EVPN; | |
6072 | ||
6073 | /* Walk entire global routing table and evaluate routes which could be | |
6074 | * imported into this VPN. Note that we cannot just look at the routes | |
6075 | * for the VNI's RD - | |
6076 | * remote routes applicable for this VNI could have any RD. | |
6077 | */ | |
6078 | /* EVPN routes are a 2-level table. */ | |
9bcb3eef DS |
6079 | for (rd_dest = bgp_table_top(bgp->rib[afi][safi]); rd_dest; |
6080 | rd_dest = bgp_route_next(rd_dest)) { | |
6081 | table = bgp_dest_get_bgp_table_info(rd_dest); | |
db0e1937 MK |
6082 | if (!table) |
6083 | continue; | |
6084 | ||
9bcb3eef DS |
6085 | for (dest = bgp_table_top(table); dest; |
6086 | dest = bgp_route_next(dest)) { | |
db0e1937 | 6087 | |
9bcb3eef | 6088 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; |
6f94b685 | 6089 | pi = pi->next) { |
db0e1937 MK |
6090 | |
6091 | /* Consider "valid" remote routes applicable for | |
6092 | * this VNI. */ | |
40381db7 DS |
6093 | if (!(pi->type == ZEBRA_ROUTE_BGP |
6094 | && pi->sub_type == BGP_ROUTE_NORMAL)) | |
db0e1937 | 6095 | continue; |
9bcb3eef DS |
6096 | if (bgp_nexthop_self(bgp, afi, pi->type, |
6097 | pi->sub_type, pi->attr, | |
6098 | dest)) { | |
b54892e0 | 6099 | const struct prefix *p = |
9bcb3eef | 6100 | bgp_dest_get_prefix(dest); |
db0e1937 | 6101 | |
b54892e0 DS |
6102 | if (bgp_debug_update(pi->peer, p, NULL, |
6103 | 1)) { | |
6104 | char attr_str[BUFSIZ] = {0}; | |
db0e1937 | 6105 | |
b54892e0 | 6106 | bgp_dump_attr(pi->attr, |
5022c833 DA |
6107 | attr_str, |
6108 | sizeof(attr_str)); | |
db0e1937 | 6109 | |
db0e1937 | 6110 | zlog_debug( |
56ca3b5b | 6111 | "%u: prefix %pBD with attr %s - DENIED due to martian or self nexthop", |
9bcb3eef | 6112 | bgp->vrf_id, dest, |
db0e1937 | 6113 | attr_str); |
b54892e0 | 6114 | } |
db0e1937 | 6115 | bgp_evpn_unimport_route(bgp, afi, safi, |
b54892e0 | 6116 | p, pi); |
db0e1937 | 6117 | |
9bcb3eef | 6118 | bgp_rib_remove(dest, pi, pi->peer, afi, |
60466a63 | 6119 | safi); |
db0e1937 | 6120 | } |
db0e1937 MK |
6121 | } |
6122 | } | |
6123 | } | |
6124 | ||
6125 | return 0; | |
6126 | } | |
6127 | ||
128ea8ab | 6128 | /* |
6129 | * Handle del of a local MACIP. | |
6130 | */ | |
d62a17ae | 6131 | int bgp_evpn_local_macip_del(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
ec0ab544 | 6132 | struct ipaddr *ip, int state) |
128ea8ab | 6133 | { |
d62a17ae | 6134 | struct bgpevpn *vpn; |
6135 | struct prefix_evpn p; | |
9bcb3eef | 6136 | struct bgp_dest *dest; |
128ea8ab | 6137 | |
d62a17ae | 6138 | /* Lookup VNI hash - should exist. */ |
6139 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
6140 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 6141 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 6142 | "%u: VNI hash entry for VNI %u %s at MACIP DEL", |
d62a17ae | 6143 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
6144 | return -1; | |
6145 | } | |
128ea8ab | 6146 | |
d62a17ae | 6147 | build_evpn_type2_prefix(&p, mac, ip); |
ec0ab544 AK |
6148 | if (state == ZEBRA_NEIGH_ACTIVE) { |
6149 | /* Remove EVPN type-2 route and schedule for processing. */ | |
6150 | delete_evpn_route(bgp, vpn, &p); | |
6151 | } else { | |
6152 | /* Re-instate the current remote best path if any */ | |
852d9f97 | 6153 | dest = bgp_evpn_vni_node_lookup(vpn, &p, NULL); |
e71ad4b6 | 6154 | if (dest) { |
9bcb3eef | 6155 | evpn_zebra_reinstall_best_route(bgp, vpn, dest); |
e71ad4b6 DA |
6156 | bgp_dest_unlock_node(dest); |
6157 | } | |
ec0ab544 | 6158 | } |
128ea8ab | 6159 | |
d62a17ae | 6160 | return 0; |
128ea8ab | 6161 | } |
6162 | ||
6163 | /* | |
6164 | * Handle add of a local MACIP. | |
6165 | */ | |
d62a17ae | 6166 | int bgp_evpn_local_macip_add(struct bgp *bgp, vni_t vni, struct ethaddr *mac, |
c44ab6f1 | 6167 | struct ipaddr *ip, uint8_t flags, uint32_t seq, esi_t *esi) |
128ea8ab | 6168 | { |
d62a17ae | 6169 | struct bgpevpn *vpn; |
6170 | struct prefix_evpn p; | |
128ea8ab | 6171 | |
d62a17ae | 6172 | /* Lookup VNI hash - should exist. */ |
6173 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
6174 | if (!vpn || !is_vni_live(vpn)) { | |
e50f7cfd | 6175 | flog_warn(EC_BGP_EVPN_VPN_VNI, |
28642513 | 6176 | "%u: VNI hash entry for VNI %u %s at MACIP ADD", |
d62a17ae | 6177 | bgp->vrf_id, vni, vpn ? "not live" : "not found"); |
6178 | return -1; | |
6179 | } | |
128ea8ab | 6180 | |
d62a17ae | 6181 | /* Create EVPN type-2 route and schedule for processing. */ |
6182 | build_evpn_type2_prefix(&p, mac, ip); | |
c44ab6f1 | 6183 | if (update_evpn_route(bgp, vpn, &p, flags, seq, esi)) { |
af4c2728 | 6184 | flog_err( |
e50f7cfd | 6185 | EC_BGP_EVPN_ROUTE_CREATE, |
c0d72166 | 6186 | "%u:Failed to create Type-2 route, VNI %u %s MAC %pEA IP %pIA (flags: 0x%x)", |
1a98c087 | 6187 | bgp->vrf_id, vpn->vni, |
996c9314 LB |
6188 | CHECK_FLAG(flags, ZEBRA_MACIP_TYPE_STICKY) |
6189 | ? "sticky gateway" | |
6190 | : "", | |
c0d72166 | 6191 | mac, ip, flags); |
d62a17ae | 6192 | return -1; |
6193 | } | |
128ea8ab | 6194 | |
d62a17ae | 6195 | return 0; |
128ea8ab | 6196 | } |
6197 | ||
e3b78da8 | 6198 | static void link_l2vni_hash_to_l3vni(struct hash_bucket *bucket, |
6a8657d0 MK |
6199 | struct bgp *bgp_vrf) |
6200 | { | |
e3b78da8 | 6201 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; |
5e53dce3 | 6202 | struct bgp *bgp_evpn = NULL; |
6a8657d0 | 6203 | |
5e53dce3 T |
6204 | bgp_evpn = bgp_get_evpn(); |
6205 | assert(bgp_evpn); | |
6a8657d0 | 6206 | |
6a8657d0 MK |
6207 | if (vpn->tenant_vrf_id == bgp_vrf->vrf_id) |
6208 | bgpevpn_link_to_l3vni(vpn); | |
6209 | } | |
6210 | ||
14e814ea CS |
6211 | int bgp_evpn_local_l3vni_add(vni_t l3vni, vrf_id_t vrf_id, |
6212 | struct ethaddr *svi_rmac, | |
6213 | struct ethaddr *vrr_rmac, | |
0483af6e | 6214 | struct in_addr originator_ip, int filter, |
14e814ea CS |
6215 | ifindex_t svi_ifindex, |
6216 | bool is_anycast_mac) | |
fe1dc5a3 MK |
6217 | { |
6218 | struct bgp *bgp_vrf = NULL; /* bgp VRF instance */ | |
5e53dce3 | 6219 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c MK |
6220 | struct listnode *node = NULL; |
6221 | struct bgpevpn *vpn = NULL; | |
fe1dc5a3 MK |
6222 | as_t as = 0; |
6223 | ||
3621ebc5 | 6224 | /* get the EVPN instance - required to get the AS number for VRF |
523cafc4 | 6225 | * auto-creatio |
6226 | */ | |
5e53dce3 T |
6227 | bgp_evpn = bgp_get_evpn(); |
6228 | if (!bgp_evpn) { | |
af4c2728 | 6229 | flog_err( |
e50f7cfd | 6230 | EC_BGP_NO_DFLT, |
3621ebc5 | 6231 | "Cannot process L3VNI %u ADD - EVPN BGP instance not yet created", |
996c9314 | 6232 | l3vni); |
fe1dc5a3 MK |
6233 | return -1; |
6234 | } | |
5e53dce3 | 6235 | as = bgp_evpn->as; |
fe1dc5a3 | 6236 | |
0437e105 | 6237 | /* if the BGP vrf instance doesn't exist - create one */ |
3621ebc5 | 6238 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); |
fe1dc5a3 MK |
6239 | if (!bgp_vrf) { |
6240 | ||
6241 | int ret = 0; | |
6242 | ||
5d5393b9 DL |
6243 | ret = bgp_get_vty(&bgp_vrf, &as, vrf_id_to_name(vrf_id), |
6244 | vrf_id == VRF_DEFAULT | |
6245 | ? BGP_INSTANCE_TYPE_DEFAULT | |
6246 | : BGP_INSTANCE_TYPE_VRF); | |
fe1dc5a3 | 6247 | switch (ret) { |
fe1dc5a3 | 6248 | case BGP_ERR_AS_MISMATCH: |
e50f7cfd | 6249 | flog_err(EC_BGP_EVPN_AS_MISMATCH, |
d09328e5 IR |
6250 | "BGP instance is already running; AS is %u", |
6251 | as); | |
fe1dc5a3 MK |
6252 | return -1; |
6253 | case BGP_ERR_INSTANCE_MISMATCH: | |
e50f7cfd | 6254 | flog_err(EC_BGP_EVPN_INSTANCE_MISMATCH, |
d09328e5 | 6255 | "BGP instance type mismatch"); |
fe1dc5a3 MK |
6256 | return -1; |
6257 | } | |
6258 | ||
6259 | /* mark as auto created */ | |
6260 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO); | |
6261 | } | |
6262 | ||
0483af6e | 6263 | /* associate the vrf with l3vni and related parameters */ |
fe1dc5a3 | 6264 | bgp_vrf->l3vni = l3vni; |
b67a60d2 | 6265 | bgp_vrf->originator_ip = originator_ip; |
0483af6e | 6266 | bgp_vrf->l3vni_svi_ifindex = svi_ifindex; |
14e814ea | 6267 | bgp_vrf->evpn_info->is_anycast_mac = is_anycast_mac; |
b67a60d2 | 6268 | |
14e814ea CS |
6269 | /* copy anycast MAC from VRR MAC */ |
6270 | memcpy(&bgp_vrf->rmac, vrr_rmac, ETH_ALEN); | |
6271 | /* copy sys RMAC from SVI MAC */ | |
6272 | memcpy(&bgp_vrf->evpn_info->pip_rmac_zebra, svi_rmac, ETH_ALEN); | |
6273 | /* PIP user configured mac is not present use svi mac as sys mac */ | |
6274 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static)) | |
6275 | memcpy(&bgp_vrf->evpn_info->pip_rmac, svi_rmac, ETH_ALEN); | |
6276 | ||
c0d72166 DS |
6277 | if (bgp_debug_zebra(NULL)) |
6278 | zlog_debug( | |
6279 | "VRF %s vni %u pip %s RMAC %pEA sys RMAC %pEA static RMAC %pEA is_anycast_mac %s", | |
6280 | vrf_id_to_name(bgp_vrf->vrf_id), bgp_vrf->l3vni, | |
6281 | bgp_vrf->evpn_info->advertise_pip ? "enable" | |
6282 | : "disable", | |
6283 | &bgp_vrf->rmac, &bgp_vrf->evpn_info->pip_rmac, | |
6284 | &bgp_vrf->evpn_info->pip_rmac_static, | |
6285 | is_anycast_mac ? "Enable" : "Disable"); | |
6286 | ||
c48d9f5f | 6287 | /* set the right filter - are we using l3vni only for prefix routes? */ |
10f70510 | 6288 | if (filter) { |
c48d9f5f MK |
6289 | SET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
6290 | ||
10f70510 AD |
6291 | /* |
6292 | * VNI_FLAG_USE_TWO_LABELS flag for linked L2VNIs should not be | |
6293 | * set before linking vrf to L3VNI. Thus, no need to clear | |
6294 | * that explicitly. | |
6295 | */ | |
6296 | } else { | |
6297 | UNSET_FLAG(bgp_vrf->vrf_flags, | |
6298 | BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); | |
6299 | ||
6300 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
6301 | if (!CHECK_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS)) { | |
6302 | ||
6303 | /* | |
6304 | * If we are flapping VNI_FLAG_USE_TWO_LABELS | |
6305 | * flag, update all MACIP routes in this VNI | |
6306 | */ | |
6307 | SET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
6308 | update_all_type2_routes(bgp_evpn, vpn); | |
6309 | } | |
6310 | } | |
6311 | } | |
6312 | ||
530e8a6e | 6313 | /* Map auto derive or configured RTs */ |
58d8948c SW |
6314 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD) || |
6315 | CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_AUTO_RT_CFGD)) | |
c581d8b0 | 6316 | evpn_auto_rt_import_add_for_vrf(bgp_vrf); |
530e8a6e CS |
6317 | else |
6318 | bgp_evpn_map_vrf_to_its_rts(bgp_vrf); | |
6319 | ||
58d8948c SW |
6320 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD) || |
6321 | CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_AUTO_RT_CFGD)) | |
c581d8b0 | 6322 | evpn_auto_rt_export_add_for_vrf(bgp_vrf); |
530e8a6e CS |
6323 | |
6324 | /* auto derive RD */ | |
676f83b9 | 6325 | bgp_evpn_derive_auto_rd_for_vrf(bgp_vrf); |
fe1dc5a3 | 6326 | |
6a8657d0 | 6327 | /* link all corresponding l2vnis */ |
5e53dce3 | 6328 | hash_iterate(bgp_evpn->vnihash, |
e3b78da8 | 6329 | (void (*)(struct hash_bucket *, |
996c9314 | 6330 | void *))link_l2vni_hash_to_l3vni, |
6a8657d0 MK |
6331 | bgp_vrf); |
6332 | ||
c48d9f5f MK |
6333 | /* Only update all corresponding type-2 routes if we are advertising two |
6334 | * labels along with type-2 routes | |
6335 | */ | |
6336 | if (!filter) | |
6337 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) | |
5e53dce3 | 6338 | update_routes_for_vni(bgp_evpn, vpn); |
fe1dc5a3 | 6339 | |
06d2e8f3 MK |
6340 | /* advertise type-5 routes if needed */ |
6341 | update_advertise_vrf_routes(bgp_vrf); | |
6342 | ||
5ba238b7 MK |
6343 | /* install all remote routes belonging to this l3vni into correspondng |
6344 | * vrf */ | |
6345 | install_routes_for_vrf(bgp_vrf); | |
fe1dc5a3 MK |
6346 | |
6347 | return 0; | |
6348 | } | |
6349 | ||
996c9314 | 6350 | int bgp_evpn_local_l3vni_del(vni_t l3vni, vrf_id_t vrf_id) |
fe1dc5a3 MK |
6351 | { |
6352 | struct bgp *bgp_vrf = NULL; /* bgp vrf instance */ | |
5e53dce3 | 6353 | struct bgp *bgp_evpn = NULL; /* EVPN bgp instance */ |
f1f8b53c | 6354 | struct listnode *node = NULL; |
18abc1eb | 6355 | struct listnode *next = NULL; |
f1f8b53c | 6356 | struct bgpevpn *vpn = NULL; |
fe1dc5a3 MK |
6357 | |
6358 | bgp_vrf = bgp_lookup_by_vrf_id(vrf_id); | |
6359 | if (!bgp_vrf) { | |
af4c2728 | 6360 | flog_err( |
e50f7cfd | 6361 | EC_BGP_NO_DFLT, |
996c9314 LB |
6362 | "Cannot process L3VNI %u Del - Could not find BGP instance", |
6363 | l3vni); | |
fe1dc5a3 MK |
6364 | return -1; |
6365 | } | |
6366 | ||
5e53dce3 T |
6367 | bgp_evpn = bgp_get_evpn(); |
6368 | if (!bgp_evpn) { | |
af4c2728 | 6369 | flog_err( |
e50f7cfd | 6370 | EC_BGP_NO_DFLT, |
3621ebc5 | 6371 | "Cannot process L3VNI %u Del - Could not find EVPN BGP instance", |
996c9314 | 6372 | l3vni); |
f1f8b53c MK |
6373 | return -1; |
6374 | } | |
6375 | ||
d846168d | 6376 | /* Remove remote routes from BGT VRF even if BGP_VRF_AUTO is configured, |
18ee8310 | 6377 | * bgp_delete would not remove/decrement bgp_path_info of the ip_prefix |
d846168d CS |
6378 | * routes. This will uninstalling the routes from zebra and decremnt the |
6379 | * bgp info count. | |
523cafc4 | 6380 | */ |
d846168d | 6381 | uninstall_routes_for_vrf(bgp_vrf); |
5ba238b7 | 6382 | |
06d2e8f3 MK |
6383 | /* delete/withdraw all type-5 routes */ |
6384 | delete_withdraw_vrf_routes(bgp_vrf); | |
6385 | ||
fe1dc5a3 MK |
6386 | /* remove the l3vni from vrf instance */ |
6387 | bgp_vrf->l3vni = 0; | |
6388 | ||
6389 | /* remove the Rmac from the BGP vrf */ | |
6390 | memset(&bgp_vrf->rmac, 0, sizeof(struct ethaddr)); | |
14e814ea CS |
6391 | memset(&bgp_vrf->evpn_info->pip_rmac_zebra, 0, ETH_ALEN); |
6392 | if (is_zero_mac(&bgp_vrf->evpn_info->pip_rmac_static) && | |
6393 | !is_zero_mac(&bgp_vrf->evpn_info->pip_rmac)) | |
6394 | memset(&bgp_vrf->evpn_info->pip_rmac, 0, ETH_ALEN); | |
fe1dc5a3 | 6395 | |
530e8a6e | 6396 | /* remove default import RT or Unmap non-default import RT */ |
1525e99f | 6397 | if (!list_isempty(bgp_vrf->vrf_import_rtl)) { |
10ebe1ab | 6398 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); |
530e8a6e CS |
6399 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_IMPORT_RT_CFGD)) |
6400 | list_delete_all_node(bgp_vrf->vrf_import_rtl); | |
23a06e11 | 6401 | } |
530e8a6e CS |
6402 | |
6403 | /* remove default export RT */ | |
6404 | if (!list_isempty(bgp_vrf->vrf_export_rtl) && | |
6405 | !CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_EXPORT_RT_CFGD)) { | |
5ba238b7 | 6406 | list_delete_all_node(bgp_vrf->vrf_export_rtl); |
23a06e11 | 6407 | } |
fe1dc5a3 | 6408 | |
f1f8b53c | 6409 | /* update all corresponding local mac-ip routes */ |
c48d9f5f MK |
6410 | if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY)) { |
6411 | for (ALL_LIST_ELEMENTS_RO(bgp_vrf->l2vnis, node, vpn)) { | |
6412 | UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS); | |
5e53dce3 | 6413 | update_routes_for_vni(bgp_evpn, vpn); |
c48d9f5f MK |
6414 | } |
6415 | } | |
fe1dc5a3 | 6416 | |
18abc1eb | 6417 | /* If any L2VNIs point to this instance, unlink them. */ |
6418 | for (ALL_LIST_ELEMENTS(bgp_vrf->l2vnis, node, next, vpn)) | |
6419 | bgpevpn_unlink_from_l3vni(vpn); | |
6420 | ||
ff9d54fb CS |
6421 | UNSET_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY); |
6422 | ||
fe1dc5a3 MK |
6423 | /* Delete the instance if it was autocreated */ |
6424 | if (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_AUTO)) | |
6425 | bgp_delete(bgp_vrf); | |
6426 | ||
6427 | return 0; | |
6428 | } | |
6429 | ||
128ea8ab | 6430 | /* |
6431 | * Handle del of a local VNI. | |
6432 | */ | |
d62a17ae | 6433 | int bgp_evpn_local_vni_del(struct bgp *bgp, vni_t vni) |
128ea8ab | 6434 | { |
d62a17ae | 6435 | struct bgpevpn *vpn; |
128ea8ab | 6436 | |
d62a17ae | 6437 | /* Locate VNI hash */ |
6438 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
6439 | if (!vpn) { | |
1e00627b | 6440 | if (bgp_debug_zebra(NULL)) |
ade6974d | 6441 | flog_warn( |
e50f7cfd | 6442 | EC_BGP_EVPN_VPN_VNI, |
ade6974d QY |
6443 | "%u: VNI hash entry for VNI %u not found at DEL", |
6444 | bgp->vrf_id, vni); | |
d62a17ae | 6445 | return 0; |
6446 | } | |
128ea8ab | 6447 | |
d62a17ae | 6448 | /* Remove all local EVPN routes and schedule for processing (to |
6449 | * withdraw from peers). | |
6450 | */ | |
6451 | delete_routes_for_vni(bgp, vpn); | |
128ea8ab | 6452 | |
021b6596 AD |
6453 | bgp_evpn_unlink_from_vni_svi_hash(bgp, vpn); |
6454 | ||
9daa5d47 | 6455 | vpn->svi_ifindex = 0; |
db0e1937 MK |
6456 | /* |
6457 | * tunnel is no longer active, del tunnel ip address from tip_hash | |
6458 | */ | |
6459 | bgp_tip_del(bgp, &vpn->originator_ip); | |
6460 | ||
d62a17ae | 6461 | /* Clear "live" flag and see if hash needs to be freed. */ |
6462 | UNSET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
6463 | if (!is_vni_configured(vpn)) | |
6464 | bgp_evpn_free(bgp, vpn); | |
128ea8ab | 6465 | |
d62a17ae | 6466 | return 0; |
128ea8ab | 6467 | } |
6468 | ||
6469 | /* | |
d1911c26 | 6470 | * Handle add (or update) of a local VNI. The VNI changes we care |
6471 | * about are for the local-tunnel-ip and the (tenant) VRF. | |
128ea8ab | 6472 | */ |
d62a17ae | 6473 | int bgp_evpn_local_vni_add(struct bgp *bgp, vni_t vni, |
76d07c7a AK |
6474 | struct in_addr originator_ip, |
6475 | vrf_id_t tenant_vrf_id, | |
9daa5d47 AD |
6476 | struct in_addr mcast_grp, |
6477 | ifindex_t svi_ifindex) | |
d62a17ae | 6478 | { |
6479 | struct bgpevpn *vpn; | |
6480 | struct prefix_evpn p; | |
6481 | ||
d62a17ae | 6482 | /* Lookup VNI. If present and no change, exit. */ |
6483 | vpn = bgp_evpn_lookup_vni(bgp, vni); | |
ddd16ed5 | 6484 | if (vpn) { |
29c53922 | 6485 | |
d1911c26 | 6486 | if (is_vni_live(vpn) |
6487 | && IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip) | |
76d07c7a | 6488 | && IPV4_ADDR_SAME(&vpn->mcast_grp, &mcast_grp) |
9daa5d47 AD |
6489 | && vpn->tenant_vrf_id == tenant_vrf_id |
6490 | && vpn->svi_ifindex == svi_ifindex) | |
d1911c26 | 6491 | /* Probably some other param has changed that we don't |
6492 | * care about. */ | |
6493 | return 0; | |
6494 | ||
76d07c7a AK |
6495 | bgp_evpn_mcast_grp_change(bgp, vpn, mcast_grp); |
6496 | ||
021b6596 AD |
6497 | if (vpn->svi_ifindex != svi_ifindex) { |
6498 | ||
6499 | /* | |
6500 | * Unresolve all the gateway IP nexthops for this VNI | |
6501 | * for old SVI | |
6502 | */ | |
dc6cef73 AD |
6503 | bgp_evpn_remote_ip_hash_iterate( |
6504 | vpn, | |
6505 | (void (*)(struct hash_bucket *, void *)) | |
6506 | bgp_evpn_remote_ip_hash_unlink_nexthop, | |
021b6596 AD |
6507 | vpn); |
6508 | bgp_evpn_unlink_from_vni_svi_hash(bgp, vpn); | |
6509 | vpn->svi_ifindex = svi_ifindex; | |
6510 | bgp_evpn_link_to_vni_svi_hash(bgp, vpn); | |
6511 | ||
6512 | /* | |
6513 | * Resolve all the gateway IP nexthops for this VNI | |
6514 | * for new SVI | |
6515 | */ | |
dc6cef73 AD |
6516 | bgp_evpn_remote_ip_hash_iterate( |
6517 | vpn, | |
6518 | (void (*)(struct hash_bucket *, void *)) | |
6519 | bgp_evpn_remote_ip_hash_link_nexthop, | |
021b6596 AD |
6520 | vpn); |
6521 | } | |
9daa5d47 | 6522 | |
d1911c26 | 6523 | /* Update tenant_vrf_id if it has changed. */ |
6a8657d0 | 6524 | if (vpn->tenant_vrf_id != tenant_vrf_id) { |
021b6596 AD |
6525 | |
6526 | /* | |
6527 | * Unresolve all the gateway IP nexthops for this VNI | |
6528 | * in old tenant vrf | |
6529 | */ | |
dc6cef73 AD |
6530 | bgp_evpn_remote_ip_hash_iterate( |
6531 | vpn, | |
6532 | (void (*)(struct hash_bucket *, void *)) | |
6533 | bgp_evpn_remote_ip_hash_unlink_nexthop, | |
021b6596 | 6534 | vpn); |
6a8657d0 | 6535 | bgpevpn_unlink_from_l3vni(vpn); |
29c53922 | 6536 | vpn->tenant_vrf_id = tenant_vrf_id; |
6a8657d0 | 6537 | bgpevpn_link_to_l3vni(vpn); |
021b6596 AD |
6538 | |
6539 | /* | |
6540 | * Resolve all the gateway IP nexthops for this VNI | |
6541 | * in new tenant vrf | |
6542 | */ | |
dc6cef73 AD |
6543 | bgp_evpn_remote_ip_hash_iterate( |
6544 | vpn, | |
6545 | (void (*)(struct hash_bucket *, void *)) | |
6546 | bgp_evpn_remote_ip_hash_link_nexthop, | |
021b6596 | 6547 | vpn); |
6a8657d0 | 6548 | } |
29c53922 | 6549 | |
d1911c26 | 6550 | /* If tunnel endpoint IP has changed, update (and delete prior |
6551 | * type-3 route, if needed.) | |
6552 | */ | |
6553 | if (!IPV4_ADDR_SAME(&vpn->originator_ip, &originator_ip)) | |
6554 | handle_tunnel_ip_change(bgp, vpn, originator_ip); | |
d62a17ae | 6555 | |
d1911c26 | 6556 | /* Update all routes with new endpoint IP and/or export RT |
6557 | * for VRFs | |
6558 | */ | |
6559 | if (is_vni_live(vpn)) | |
6560 | update_routes_for_vni(bgp, vpn); | |
879e43a5 | 6561 | } else { |
6562 | /* Create or update as appropriate. */ | |
76d07c7a | 6563 | vpn = bgp_evpn_new(bgp, vni, originator_ip, tenant_vrf_id, |
879e43a5 | 6564 | mcast_grp, svi_ifindex); |
d62a17ae | 6565 | } |
6566 | ||
db0e1937 | 6567 | /* if the VNI is live already, there is nothing more to do */ |
ddd16ed5 MK |
6568 | if (is_vni_live(vpn)) |
6569 | return 0; | |
6570 | ||
d62a17ae | 6571 | /* Mark as "live" */ |
6572 | SET_FLAG(vpn->flags, VNI_FLAG_LIVE); | |
6573 | ||
db0e1937 MK |
6574 | /* tunnel is now active, add tunnel-ip to db */ |
6575 | bgp_tip_add(bgp, &originator_ip); | |
6576 | ||
6577 | /* filter routes as nexthop database has changed */ | |
6578 | bgp_filter_evpn_routes_upon_martian_nh_change(bgp); | |
6579 | ||
fd069644 DS |
6580 | /* |
6581 | * Create EVPN type-3 route and schedule for processing. | |
6582 | * | |
6583 | * RT-3 only if doing head-end replication | |
6584 | */ | |
833b8a50 AK |
6585 | if (bgp_evpn_vni_flood_mode_get(bgp, vpn) |
6586 | == VXLAN_FLOOD_HEAD_END_REPL) { | |
fd069644 | 6587 | build_evpn_type3_prefix(&p, vpn->originator_ip); |
c44ab6f1 | 6588 | if (update_evpn_route(bgp, vpn, &p, 0, 0, NULL)) { |
fd069644 DS |
6589 | flog_err(EC_BGP_EVPN_ROUTE_CREATE, |
6590 | "%u: Type3 route creation failure for VNI %u", | |
6591 | bgp->vrf_id, vni); | |
6592 | return -1; | |
6593 | } | |
d62a17ae | 6594 | } |
6595 | ||
6596 | /* If we have learnt and retained remote routes (VTEPs, MACs) for this | |
6597 | * VNI, | |
6598 | * install them. | |
6599 | */ | |
6600 | install_routes_for_vni(bgp, vpn); | |
6601 | ||
d7d97010 MK |
6602 | /* If we are advertising gateway mac-ip |
6603 | It needs to be conveyed again to zebra */ | |
6604 | bgp_zebra_advertise_gw_macip(bgp, vpn->advertise_gw_macip, vpn->vni); | |
6605 | ||
df070e6f CS |
6606 | /* advertise svi mac-ip knob to zebra */ |
6607 | bgp_zebra_advertise_svi_macip(bgp, vpn->advertise_svi_macip, vpn->vni); | |
6608 | ||
d62a17ae | 6609 | return 0; |
b18825eb | 6610 | } |
14c1a7bf | 6611 | |
fd069644 DS |
6612 | /* |
6613 | * Handle change in setting for BUM handling. The supported values | |
6614 | * are head-end replication and dropping all BUM packets. Any change | |
6615 | * should be registered with zebra. Also, if doing head-end replication, | |
6616 | * need to advertise local VNIs as EVPN RT-3 wheras, if BUM packets are | |
6617 | * to be dropped, the RT-3s must be withdrawn. | |
6618 | */ | |
6619 | void bgp_evpn_flood_control_change(struct bgp *bgp) | |
6620 | { | |
6621 | zlog_info("L2VPN EVPN BUM handling is %s", | |
6622 | bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL ? | |
6623 | "Flooding" : "Flooding Disabled"); | |
6624 | ||
6625 | bgp_zebra_vxlan_flood_control(bgp, bgp->vxlan_flood_ctrl); | |
6626 | if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_HEAD_END_REPL) | |
6627 | hash_iterate(bgp->vnihash, create_advertise_type3, bgp); | |
6628 | else if (bgp->vxlan_flood_ctrl == VXLAN_FLOOD_DISABLED) | |
6629 | hash_iterate(bgp->vnihash, delete_withdraw_type3, bgp); | |
6630 | } | |
6631 | ||
7724c0a1 | 6632 | /* |
6633 | * Cleanup EVPN information on disable - Need to delete and withdraw | |
6634 | * EVPN routes from peers. | |
6635 | */ | |
d62a17ae | 6636 | void bgp_evpn_cleanup_on_disable(struct bgp *bgp) |
7724c0a1 | 6637 | { |
e3b78da8 | 6638 | hash_iterate(bgp->vnihash, (void (*)(struct hash_bucket *, |
9d303b37 DL |
6639 | void *))cleanup_vni_on_disable, |
6640 | bgp); | |
7724c0a1 | 6641 | } |
6642 | ||
14c1a7bf | 6643 | /* |
6644 | * Cleanup EVPN information - invoked at the time of bgpd exit or when the | |
6645 | * BGP instance (default) is being freed. | |
6646 | */ | |
d62a17ae | 6647 | void bgp_evpn_cleanup(struct bgp *bgp) |
14c1a7bf | 6648 | { |
1525e99f | 6649 | hash_iterate(bgp->vnihash, |
e3b78da8 | 6650 | (void (*)(struct hash_bucket *, void *))free_vni_entry, |
1525e99f DS |
6651 | bgp); |
6652 | ||
3727e359 | 6653 | hash_clean(bgp->import_rt_hash, (void (*)(void *))hash_import_rt_free); |
1525e99f | 6654 | hash_free(bgp->import_rt_hash); |
d62a17ae | 6655 | bgp->import_rt_hash = NULL; |
1525e99f | 6656 | |
3727e359 DA |
6657 | hash_clean(bgp->vrf_import_rt_hash, |
6658 | (void (*)(void *))hash_vrf_import_rt_free); | |
1525e99f | 6659 | hash_free(bgp->vrf_import_rt_hash); |
10ebe1ab | 6660 | bgp->vrf_import_rt_hash = NULL; |
1525e99f | 6661 | |
3727e359 | 6662 | hash_clean(bgp->vni_svi_hash, (void (*)(void *))hash_evpn_free); |
021b6596 AD |
6663 | hash_free(bgp->vni_svi_hash); |
6664 | bgp->vni_svi_hash = NULL; | |
1525e99f | 6665 | hash_free(bgp->vnihash); |
d62a17ae | 6666 | bgp->vnihash = NULL; |
1525e99f | 6667 | |
6a154c88 DL |
6668 | list_delete(&bgp->vrf_import_rtl); |
6669 | list_delete(&bgp->vrf_export_rtl); | |
6670 | list_delete(&bgp->l2vnis); | |
14c1a7bf | 6671 | } |
6672 | ||
6673 | /* | |
6674 | * Initialization for EVPN | |
6675 | * Create | |
6676 | * VNI hash table | |
6677 | * hash for RT to VNI | |
14c1a7bf | 6678 | */ |
d62a17ae | 6679 | void bgp_evpn_init(struct bgp *bgp) |
6680 | { | |
6681 | bgp->vnihash = | |
6682 | hash_create(vni_hash_key_make, vni_hash_cmp, "BGP VNI Hash"); | |
021b6596 AD |
6683 | bgp->vni_svi_hash = |
6684 | hash_create(vni_svi_hash_key_make, vni_svi_hash_cmp, | |
6685 | "BGP VNI hash based on SVI ifindex"); | |
d62a17ae | 6686 | bgp->import_rt_hash = |
6687 | hash_create(import_rt_hash_key_make, import_rt_hash_cmp, | |
6688 | "BGP Import RT Hash"); | |
10ebe1ab MK |
6689 | bgp->vrf_import_rt_hash = |
6690 | hash_create(vrf_import_rt_hash_key_make, vrf_import_rt_hash_cmp, | |
6691 | "BGP VRF Import RT Hash"); | |
c581d8b0 MK |
6692 | bgp->vrf_import_rtl = list_new(); |
6693 | bgp->vrf_import_rtl->cmp = | |
ca337b46 SW |
6694 | (int (*)(void *, void *))evpn_vrf_route_target_cmp; |
6695 | bgp->vrf_import_rtl->del = evpn_vrf_rt_del; | |
c581d8b0 MK |
6696 | bgp->vrf_export_rtl = list_new(); |
6697 | bgp->vrf_export_rtl->cmp = | |
ca337b46 SW |
6698 | (int (*)(void *, void *))evpn_vrf_route_target_cmp; |
6699 | bgp->vrf_export_rtl->del = evpn_vrf_rt_del; | |
6a8657d0 | 6700 | bgp->l2vnis = list_new(); |
64465785 | 6701 | bgp->l2vnis->cmp = vni_list_cmp; |
85c8d83b CS |
6702 | /* By default Duplicate Address Dection is enabled. |
6703 | * Max-moves (N) 5, detection time (M) 180 | |
6704 | * default action is warning-only | |
6705 | * freeze action permanently freezes address, | |
6706 | * and freeze time (auto-recovery) is disabled. | |
6707 | */ | |
6708 | if (bgp->evpn_info) { | |
6709 | bgp->evpn_info->dup_addr_detect = true; | |
6710 | bgp->evpn_info->dad_time = EVPN_DAD_DEFAULT_TIME; | |
6711 | bgp->evpn_info->dad_max_moves = EVPN_DAD_DEFAULT_MAX_MOVES; | |
6712 | bgp->evpn_info->dad_freeze = false; | |
6713 | bgp->evpn_info->dad_freeze_time = 0; | |
0b9d9cd0 CS |
6714 | /* Initialize zebra vxlan */ |
6715 | bgp_zebra_dup_addr_detection(bgp); | |
5394a276 CS |
6716 | /* Enable PIP feature by default for bgp vrf instance */ |
6717 | if (bgp->inst_type == BGP_INSTANCE_TYPE_VRF) { | |
6718 | struct bgp *bgp_default; | |
6719 | ||
6720 | bgp->evpn_info->advertise_pip = true; | |
6721 | bgp_default = bgp_get_default(); | |
6722 | if (bgp_default) | |
6723 | bgp->evpn_info->pip_ip = bgp_default->router_id; | |
6724 | } | |
85c8d83b | 6725 | } |
fd069644 DS |
6726 | |
6727 | /* Default BUM handling is to do head-end replication. */ | |
6728 | bgp->vxlan_flood_ctrl = VXLAN_FLOOD_HEAD_END_REPL; | |
090efa2f AK |
6729 | |
6730 | bgp_evpn_nh_init(bgp); | |
14c1a7bf | 6731 | } |
10ebe1ab MK |
6732 | |
6733 | void bgp_evpn_vrf_delete(struct bgp *bgp_vrf) | |
6734 | { | |
6735 | bgp_evpn_unmap_vrf_from_its_rts(bgp_vrf); | |
090efa2f | 6736 | bgp_evpn_nh_finish(bgp_vrf); |
10ebe1ab | 6737 | } |
44c69747 LK |
6738 | |
6739 | /* | |
6740 | * Get the prefixlen of the ip prefix carried within the type5 evpn route. | |
6741 | */ | |
5f040085 | 6742 | int bgp_evpn_get_type5_prefixlen(const struct prefix *pfx) |
44c69747 LK |
6743 | { |
6744 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6745 | ||
6746 | if (!pfx || pfx->family != AF_EVPN) | |
6747 | return 0; | |
6748 | ||
6749 | if (evp->prefix.route_type != BGP_EVPN_IP_PREFIX_ROUTE) | |
6750 | return 0; | |
6751 | ||
6752 | return evp->prefix.prefix_addr.ip_prefix_length; | |
6753 | } | |
7c312383 AD |
6754 | |
6755 | /* | |
6756 | * Should we register nexthop for this EVPN prefix for nexthop tracking? | |
6757 | */ | |
5a1ae2c2 | 6758 | bool bgp_evpn_is_prefix_nht_supported(const struct prefix *pfx) |
7c312383 AD |
6759 | { |
6760 | struct prefix_evpn *evp = (struct prefix_evpn *)pfx; | |
6761 | ||
6762 | /* | |
e11329ca | 6763 | * EVPN routes should be marked as valid only if the nexthop is |
6764 | * reachable. Only if this happens, the route should be imported | |
6765 | * (into VNI or VRF routing tables) and/or advertised. | |
fff7545a | 6766 | * Note: This is currently applied for EVPN type-1, type-2, |
6767 | * type-3, type-4 and type-5 routes. | |
6768 | * It may be tweaked later on for other routes, or | |
e11329ca | 6769 | * even removed completely when all routes are handled. |
7c312383 | 6770 | */ |
fa46a5cd AK |
6771 | if (pfx && pfx->family == AF_EVPN |
6772 | && (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE | |
6773 | || evp->prefix.route_type == BGP_EVPN_AD_ROUTE | |
6774 | || evp->prefix.route_type == BGP_EVPN_ES_ROUTE | |
6775 | || evp->prefix.route_type == BGP_EVPN_IMET_ROUTE | |
6776 | || evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)) | |
7c312383 AD |
6777 | return true; |
6778 | ||
6779 | return false; | |
6780 | } | |
021b6596 AD |
6781 | |
6782 | static void *bgp_evpn_remote_ip_hash_alloc(void *p) | |
6783 | { | |
6784 | const struct evpn_remote_ip *key = (const struct evpn_remote_ip *)p; | |
6785 | struct evpn_remote_ip *ip; | |
6786 | ||
6787 | ip = XMALLOC(MTYPE_EVPN_REMOTE_IP, sizeof(struct evpn_remote_ip)); | |
6788 | *ip = *key; | |
6789 | ip->macip_path_list = list_new(); | |
6790 | ||
6791 | return ip; | |
6792 | } | |
6793 | ||
6794 | static unsigned int bgp_evpn_remote_ip_hash_key_make(const void *p) | |
6795 | { | |
6796 | const struct evpn_remote_ip *ip = p; | |
6797 | const struct ipaddr *addr = &ip->addr; | |
6798 | ||
6799 | if (IS_IPADDR_V4(addr)) | |
6800 | return jhash_1word(addr->ipaddr_v4.s_addr, 0); | |
6801 | ||
6802 | return jhash2(addr->ipaddr_v6.s6_addr32, | |
6803 | array_size(addr->ipaddr_v6.s6_addr32), 0); | |
6804 | } | |
6805 | ||
6806 | static bool bgp_evpn_remote_ip_hash_cmp(const void *p1, const void *p2) | |
6807 | { | |
6808 | const struct evpn_remote_ip *ip1 = p1; | |
6809 | const struct evpn_remote_ip *ip2 = p2; | |
6810 | ||
761cc919 | 6811 | return !ipaddr_cmp(&ip1->addr, &ip2->addr); |
021b6596 AD |
6812 | } |
6813 | ||
6814 | static void bgp_evpn_remote_ip_hash_init(struct bgpevpn *vpn) | |
6815 | { | |
dc6cef73 AD |
6816 | if (!evpn_resolve_overlay_index()) |
6817 | return; | |
6818 | ||
021b6596 AD |
6819 | vpn->remote_ip_hash = hash_create(bgp_evpn_remote_ip_hash_key_make, |
6820 | bgp_evpn_remote_ip_hash_cmp, | |
6821 | "BGP EVPN remote IP hash"); | |
6822 | } | |
6823 | ||
6824 | static void bgp_evpn_remote_ip_hash_free(struct hash_bucket *bucket, void *args) | |
6825 | { | |
6826 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6827 | struct bgpevpn *vpn = (struct bgpevpn *)args; | |
6828 | ||
6829 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false); | |
6830 | ||
6831 | list_delete(&ip->macip_path_list); | |
6832 | ||
6833 | hash_release(vpn->remote_ip_hash, ip); | |
6834 | XFREE(MTYPE_EVPN_REMOTE_IP, ip); | |
6835 | } | |
6836 | ||
6837 | static void bgp_evpn_remote_ip_hash_destroy(struct bgpevpn *vpn) | |
6838 | { | |
dc6cef73 | 6839 | if (!evpn_resolve_overlay_index() || vpn->remote_ip_hash == NULL) |
021b6596 AD |
6840 | return; |
6841 | ||
6842 | hash_iterate(vpn->remote_ip_hash, | |
6843 | (void (*)(struct hash_bucket *, void *))bgp_evpn_remote_ip_hash_free, | |
6844 | vpn); | |
6845 | ||
6846 | hash_free(vpn->remote_ip_hash); | |
6847 | vpn->remote_ip_hash = NULL; | |
6848 | } | |
6849 | ||
6850 | /* Add a remote MAC/IP route to hash table */ | |
6851 | static void bgp_evpn_remote_ip_hash_add(struct bgpevpn *vpn, | |
6852 | struct bgp_path_info *pi) | |
6853 | { | |
6854 | struct evpn_remote_ip tmp; | |
6855 | struct evpn_remote_ip *ip; | |
6856 | struct prefix_evpn *evp; | |
6857 | ||
dc6cef73 AD |
6858 | if (!evpn_resolve_overlay_index()) |
6859 | return; | |
6860 | ||
6861 | if (pi->type != ZEBRA_ROUTE_BGP || pi->sub_type != BGP_ROUTE_IMPORTED | |
6862 | || !CHECK_FLAG(pi->flags, BGP_PATH_VALID)) | |
6863 | return; | |
6864 | ||
021b6596 AD |
6865 | evp = (struct prefix_evpn *)&pi->net->p; |
6866 | ||
6867 | if (evp->family != AF_EVPN | |
6868 | || evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE | |
6869 | || is_evpn_prefix_ipaddr_none(evp)) | |
6870 | return; | |
6871 | ||
6872 | tmp.addr = evp->prefix.macip_addr.ip; | |
6873 | ip = hash_lookup(vpn->remote_ip_hash, &tmp); | |
6874 | if (ip) { | |
6875 | if (listnode_lookup(ip->macip_path_list, pi) != NULL) | |
6876 | return; | |
6877 | (void)listnode_add(ip->macip_path_list, pi); | |
6878 | return; | |
6879 | } | |
6880 | ||
6881 | ip = hash_get(vpn->remote_ip_hash, &tmp, bgp_evpn_remote_ip_hash_alloc); | |
021b6596 AD |
6882 | (void)listnode_add(ip->macip_path_list, pi); |
6883 | ||
6884 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, true); | |
6885 | } | |
6886 | ||
6887 | /* Delete a remote MAC/IP route from hash table */ | |
6888 | static void bgp_evpn_remote_ip_hash_del(struct bgpevpn *vpn, | |
6889 | struct bgp_path_info *pi) | |
6890 | { | |
6891 | struct evpn_remote_ip tmp; | |
6892 | struct evpn_remote_ip *ip; | |
6893 | struct prefix_evpn *evp; | |
6894 | ||
dc6cef73 AD |
6895 | if (!evpn_resolve_overlay_index()) |
6896 | return; | |
6897 | ||
021b6596 AD |
6898 | evp = (struct prefix_evpn *)&pi->net->p; |
6899 | ||
6900 | if (evp->family != AF_EVPN | |
6901 | || evp->prefix.route_type != BGP_EVPN_MAC_IP_ROUTE | |
6902 | || is_evpn_prefix_ipaddr_none(evp)) | |
6903 | return; | |
6904 | ||
6905 | tmp.addr = evp->prefix.macip_addr.ip; | |
6906 | ip = hash_lookup(vpn->remote_ip_hash, &tmp); | |
6907 | if (ip == NULL) | |
6908 | return; | |
6909 | ||
6910 | listnode_delete(ip->macip_path_list, pi); | |
6911 | ||
6912 | if (ip->macip_path_list->count == 0) { | |
6913 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false); | |
6914 | hash_release(vpn->remote_ip_hash, ip); | |
6915 | XFREE(MTYPE_EVPN_REMOTE_IP, ip); | |
6916 | } | |
6917 | } | |
6918 | ||
dc6cef73 AD |
6919 | static void bgp_evpn_remote_ip_hash_iterate(struct bgpevpn *vpn, |
6920 | void (*func)(struct hash_bucket *, | |
6921 | void *), | |
6922 | void *arg) | |
6923 | { | |
6924 | if (!evpn_resolve_overlay_index()) | |
6925 | return; | |
6926 | ||
6927 | hash_iterate(vpn->remote_ip_hash, func, arg); | |
6928 | } | |
6929 | ||
021b6596 AD |
6930 | static void show_remote_ip_entry(struct hash_bucket *bucket, void *args) |
6931 | { | |
6932 | char buf[INET6_ADDRSTRLEN]; | |
021b6596 AD |
6933 | struct listnode *node = NULL; |
6934 | struct bgp_path_info *pi = NULL; | |
6935 | struct vty *vty = (struct vty *)args; | |
6936 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6937 | ||
6938 | vty_out(vty, " Remote IP: %s\n", | |
6939 | ipaddr2str(&ip->addr, buf, sizeof(buf))); | |
6940 | vty_out(vty, " Linked MAC/IP routes:\n"); | |
511211bf DA |
6941 | for (ALL_LIST_ELEMENTS_RO(ip->macip_path_list, node, pi)) |
6942 | vty_out(vty, " %pFX\n", &pi->net->p); | |
021b6596 AD |
6943 | } |
6944 | ||
6945 | void bgp_evpn_show_remote_ip_hash(struct hash_bucket *bucket, void *args) | |
6946 | { | |
6947 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
6948 | struct vty *vty = (struct vty *)args; | |
6949 | ||
6950 | vty_out(vty, "VNI: %u\n", vpn->vni); | |
dc6cef73 AD |
6951 | bgp_evpn_remote_ip_hash_iterate( |
6952 | vpn, | |
021b6596 AD |
6953 | (void (*)(struct hash_bucket *, void *))show_remote_ip_entry, |
6954 | vty); | |
6955 | vty_out(vty, "\n"); | |
6956 | } | |
6957 | ||
6958 | static void bgp_evpn_remote_ip_hash_link_nexthop(struct hash_bucket *bucket, | |
6959 | void *args) | |
6960 | { | |
6961 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6962 | struct bgpevpn *vpn = (struct bgpevpn *)args; | |
6963 | ||
6964 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, true); | |
6965 | } | |
6966 | ||
6967 | static void bgp_evpn_remote_ip_hash_unlink_nexthop(struct hash_bucket *bucket, | |
6968 | void *args) | |
6969 | { | |
6970 | struct evpn_remote_ip *ip = (struct evpn_remote_ip *)bucket->data; | |
6971 | struct bgpevpn *vpn = (struct bgpevpn *)args; | |
6972 | ||
6973 | bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false); | |
6974 | } | |
6975 | ||
6976 | static unsigned int vni_svi_hash_key_make(const void *p) | |
6977 | { | |
6978 | const struct bgpevpn *vpn = p; | |
6979 | ||
6980 | return jhash_1word(vpn->svi_ifindex, 0); | |
6981 | } | |
6982 | ||
6983 | static bool vni_svi_hash_cmp(const void *p1, const void *p2) | |
6984 | { | |
6985 | const struct bgpevpn *vpn1 = p1; | |
6986 | const struct bgpevpn *vpn2 = p2; | |
6987 | ||
6988 | return (vpn1->svi_ifindex == vpn2->svi_ifindex); | |
6989 | } | |
6990 | ||
6991 | static struct bgpevpn *bgp_evpn_vni_svi_hash_lookup(struct bgp *bgp, | |
6992 | ifindex_t svi) | |
6993 | { | |
6994 | struct bgpevpn *vpn; | |
6995 | struct bgpevpn tmp; | |
6996 | ||
6006b807 | 6997 | memset(&tmp, 0, sizeof(tmp)); |
021b6596 AD |
6998 | tmp.svi_ifindex = svi; |
6999 | vpn = hash_lookup(bgp->vni_svi_hash, &tmp); | |
7000 | return vpn; | |
7001 | } | |
7002 | ||
7003 | static void bgp_evpn_link_to_vni_svi_hash(struct bgp *bgp, struct bgpevpn *vpn) | |
7004 | { | |
7005 | if (vpn->svi_ifindex == 0) | |
7006 | return; | |
7007 | ||
8e3aae66 | 7008 | (void)hash_get(bgp->vni_svi_hash, vpn, hash_alloc_intern); |
021b6596 AD |
7009 | } |
7010 | ||
7011 | static void bgp_evpn_unlink_from_vni_svi_hash(struct bgp *bgp, | |
7012 | struct bgpevpn *vpn) | |
7013 | { | |
7014 | if (vpn->svi_ifindex == 0) | |
7015 | return; | |
7016 | ||
7017 | hash_release(bgp->vni_svi_hash, vpn); | |
7018 | } | |
7019 | ||
7020 | void bgp_evpn_show_vni_svi_hash(struct hash_bucket *bucket, void *args) | |
7021 | { | |
7022 | struct bgpevpn *evpn = (struct bgpevpn *)bucket->data; | |
7023 | struct vty *vty = (struct vty *)args; | |
7024 | ||
7025 | vty_out(vty, "SVI: %u VNI: %u\n", evpn->svi_ifindex, evpn->vni); | |
7026 | } | |
7027 | ||
7028 | /* | |
7029 | * This function is called for a bgp_nexthop_cache entry when the nexthop is | |
7030 | * gateway IP overlay index. | |
7031 | * This function returns true if there is a remote MAC/IP route for the gateway | |
7032 | * IP in the EVI of the nexthop SVI. | |
7033 | */ | |
7034 | bool bgp_evpn_is_gateway_ip_resolved(struct bgp_nexthop_cache *bnc) | |
7035 | { | |
7036 | struct bgp *bgp_evpn = NULL; | |
7037 | struct bgpevpn *vpn = NULL; | |
7038 | struct evpn_remote_ip tmp; | |
7039 | struct prefix *p; | |
7040 | ||
dc6cef73 AD |
7041 | if (!evpn_resolve_overlay_index()) |
7042 | return false; | |
7043 | ||
021b6596 AD |
7044 | if (!bnc->nexthop || bnc->nexthop->ifindex == 0) |
7045 | return false; | |
7046 | ||
7047 | bgp_evpn = bgp_get_evpn(); | |
7048 | if (!bgp_evpn) | |
7049 | return false; | |
7050 | ||
7051 | /* | |
7052 | * Gateway IP is resolved by nht over SVI interface. | |
7053 | * Use this SVI to find corresponding EVI(L2 context) | |
7054 | */ | |
7055 | vpn = bgp_evpn_vni_svi_hash_lookup(bgp_evpn, bnc->nexthop->ifindex); | |
7056 | if (!vpn) | |
7057 | return false; | |
7058 | ||
7059 | if (vpn->bgp_vrf != bnc->bgp) | |
7060 | return false; | |
7061 | ||
7062 | /* | |
7063 | * Check if the gateway IP is present in the EVI remote_ip_hash table | |
7064 | * which stores all the remote IP addresses received via MAC/IP routes | |
7065 | * in this EVI | |
7066 | */ | |
6006b807 | 7067 | memset(&tmp, 0, sizeof(tmp)); |
021b6596 AD |
7068 | |
7069 | p = &bnc->prefix; | |
7070 | if (p->family == AF_INET) { | |
7071 | tmp.addr.ipa_type = IPADDR_V4; | |
7072 | memcpy(&(tmp.addr.ipaddr_v4), &(p->u.prefix4), | |
7073 | sizeof(struct in_addr)); | |
7074 | } else if (p->family == AF_INET6) { | |
7075 | tmp.addr.ipa_type = IPADDR_V6; | |
7076 | memcpy(&(tmp.addr.ipaddr_v6), &(p->u.prefix6), | |
7077 | sizeof(struct in6_addr)); | |
7078 | } else | |
7079 | return false; | |
7080 | ||
7081 | if (hash_lookup(vpn->remote_ip_hash, &tmp) == NULL) | |
7082 | return false; | |
7083 | ||
7084 | return true; | |
7085 | } | |
7086 | ||
7087 | /* Resolve/Unresolve nexthops when a MAC/IP route is added/deleted */ | |
7088 | static void bgp_evpn_remote_ip_process_nexthops(struct bgpevpn *vpn, | |
7089 | struct ipaddr *addr, | |
7090 | bool resolve) | |
7091 | { | |
7092 | afi_t afi; | |
7093 | struct prefix p; | |
7094 | struct bgp_nexthop_cache *bnc; | |
7095 | struct bgp_nexthop_cache_head *tree = NULL; | |
7096 | ||
7097 | if (!vpn->bgp_vrf || vpn->svi_ifindex == 0) | |
7098 | return; | |
7099 | ||
6006b807 | 7100 | memset(&p, 0, sizeof(p)); |
021b6596 AD |
7101 | |
7102 | if (addr->ipa_type == IPADDR_V4) { | |
7103 | afi = AFI_IP; | |
7104 | p.family = AF_INET; | |
7105 | memcpy(&(p.u.prefix4), &(addr->ipaddr_v4), | |
7106 | sizeof(struct in_addr)); | |
7107 | p.prefixlen = IPV4_MAX_BITLEN; | |
7108 | } else if (addr->ipa_type == IPADDR_V6) { | |
7109 | afi = AFI_IP6; | |
7110 | p.family = AF_INET6; | |
7111 | memcpy(&(p.u.prefix6), &(addr->ipaddr_v6), | |
7112 | sizeof(struct in6_addr)); | |
7113 | p.prefixlen = IPV6_MAX_BITLEN; | |
7114 | } else | |
7115 | return; | |
7116 | ||
7117 | tree = &vpn->bgp_vrf->nexthop_cache_table[afi]; | |
35aae5c9 | 7118 | bnc = bnc_find(tree, &p, 0, 0); |
021b6596 AD |
7119 | |
7120 | if (!bnc || !bnc->is_evpn_gwip_nexthop) | |
7121 | return; | |
7122 | ||
7123 | if (!bnc->nexthop || bnc->nexthop->ifindex != vpn->svi_ifindex) | |
7124 | return; | |
7125 | ||
511211bf DA |
7126 | if (BGP_DEBUG(nht, NHT)) |
7127 | zlog_debug("%s(%u): vni %u mac/ip %s for NH %pFX", | |
021b6596 | 7128 | vpn->bgp_vrf->name_pretty, vpn->tenant_vrf_id, |
511211bf DA |
7129 | vpn->vni, (resolve ? "add" : "delete"), |
7130 | &bnc->prefix); | |
021b6596 AD |
7131 | |
7132 | /* | |
7133 | * MAC/IP route or SVI or tenant vrf being added to EVI. | |
7134 | * Set nexthop as valid only if it is already L3 reachable | |
7135 | */ | |
7136 | if (resolve && bnc->flags & BGP_NEXTHOP_EVPN_INCOMPLETE) { | |
7137 | bnc->flags &= ~BGP_NEXTHOP_EVPN_INCOMPLETE; | |
7138 | bnc->flags |= BGP_NEXTHOP_VALID; | |
7139 | bnc->change_flags |= BGP_NEXTHOP_MACIP_CHANGED; | |
7140 | evaluate_paths(bnc); | |
7141 | } | |
7142 | ||
7143 | /* MAC/IP route or SVI or tenant vrf being deleted from EVI */ | |
7144 | if (!resolve && bnc->flags & BGP_NEXTHOP_VALID) { | |
7145 | bnc->flags &= ~BGP_NEXTHOP_VALID; | |
7146 | bnc->flags |= BGP_NEXTHOP_EVPN_INCOMPLETE; | |
7147 | bnc->change_flags |= BGP_NEXTHOP_MACIP_CHANGED; | |
7148 | evaluate_paths(bnc); | |
7149 | } | |
7150 | } | |
7151 | ||
dc6cef73 AD |
7152 | void bgp_evpn_handle_resolve_overlay_index_set(struct hash_bucket *bucket, |
7153 | void *arg) | |
7154 | { | |
7155 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
7156 | struct bgp_dest *dest; | |
7157 | struct bgp_path_info *pi; | |
7158 | ||
7159 | bgp_evpn_remote_ip_hash_init(vpn); | |
7160 | ||
852d9f97 | 7161 | for (dest = bgp_table_top(vpn->ip_table); dest; |
dc6cef73 AD |
7162 | dest = bgp_route_next(dest)) |
7163 | for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) | |
7164 | bgp_evpn_remote_ip_hash_add(vpn, pi); | |
7165 | } | |
7166 | ||
7167 | void bgp_evpn_handle_resolve_overlay_index_unset(struct hash_bucket *bucket, | |
7168 | void *arg) | |
7169 | { | |
7170 | struct bgpevpn *vpn = (struct bgpevpn *)bucket->data; | |
7171 | ||
7172 | bgp_evpn_remote_ip_hash_destroy(vpn); | |
7173 | } |